DictionaryAI

crank

KRANGK/kɹæŋk/

Pluralcranks

Verbcranks, cranking, cranked

25 meanings of crank

Practice

  1. 1
    turning levernouncountable
    A bent part of an axle or shaft, or an arm set roughly perpendicular to the end of a shaft or wheel, used to turn a mechanism or convert between rotary and reciprocating motion.

    The awning rolls out with a crank handle mounted beside the patio door.

    In a steam engine, the piston rod pushes on a crank that turns the flywheel.

    Note

    The machine part takes its name from its shape. The coffee grinder's crank handle is the everyday case, with the noun working as a modifier.

  2. 2
    high outputverbintransitive
    To operate or perform at a high level of output or effort.

    Two weeks before launch, the whole team was really cranking, shipping fixes every few hours.

    In August the canneries crank around the clock to keep up with the harvest.

    UsageUsually cranking, often after really: the team was really cranking.

    Similarhum

    Note

    Behind this verb is a crank turned at full speed, and it now covers anything working flat out: a computer, a band in a club, a rumor mill.

  3. 3
    verbtransitive
    To turn a crank, or to make a machine or part move by turning one.

    On cold mornings he had to crank the tractor by hand until it coughed to life.

    Two deckhands cranked the winch until the anchor broke the surface.

    UsageOften crank an engine by hand.

    Similarturn, wind

    Note

    The verb covers two kinds of engine cranking, and the words around it show which. With by hand, as in "motorists had to crank their engine by hand", a person is turning a real handle. Turn a key first and you are in the key-turning use, where no crank is touched at all.

  4. 4
    nounabbreviationclipping
    Short for crankshaft: the main rotating shaft of an engine, which turns the up-and-down motion of the pistons into rotation.

    A worn main bearing let the crank wobble, and the whole engine began to knock.

    The shop reground the crank and fitted new bearings before rebuilding the motor.

    Note

    Inside an engine the short form overlaps with the bent arm on a shaft, because a crankshaft can drive a crank, be driven by one, or work as one itself. Context settles which is meant: a crank that wobbles on a worn bearing or goes to the shop to be reground is the whole shaft with its throws.

    Checked 2 Nov 2026 · 3 facts

  5. 5
    nouncolloquialcountable
    A person with strange or eccentric ideas, especially one who insists on unscientific theories.

    Every few months some crank mails the physics department a manuscript disproving relativity.

    The comment section filled up with cranks insisting that a magnet in your pocket can cure arthritis.

    UsageDismissive: a crank is usually someone whose ideas the speaker thinks are wrong, not just unusual.

    Similarcrackpot, eccentric, kook, nut, oddball

  6. 6
    verbtransitive
    Of an engine, to turn over when being started, or to make it turn over by using the starter.

    Don't crank the engine for more than a few seconds at a time, or you'll drain the battery.

    We piled into the truck, and Earl cranked it up and backed out of the driveway.

    UsageOften crank the engine or crank it up. It names the attempt, so an engine can crank without starting.

    Similarturn over

    Note

    Turning a key is enough to crank an engine, and the verb names the attempt, not the result: "I turn the key and crank the engine; yet it doesn't turn over." Whether the motor actually catches is a separate matter.

    Checked 2 Nov 2026 · 2 facts

    • Cranking means turning the engine over in an attempt to start it. The engine may turn over without starting. en.wiktionary.org
    • An engine can crank without catching or starting. fordservicecontent.com
  7. 7
    act of turningnouncountable
    An act of turning a crank, handle, or shaft to operate a mechanism, such as a winch or an engine.

    Each crank of the winch pulled the sail a little higher up the mast.

    The engine coughed on the first crank and caught on the second.

    UsageOften with give and an adjective of effort: give it a good crank.

    Similarturn, rotation

    Note

    The handle can be named as well. E. N. Bellass, writing in Modern Railways (November 1964), pictures a Blackpool tram conductor serving each passenger "by a simple crank of a handle".

    Checked 2 Nov 2026 · 2 facts

    • E. N. Bellass wrote the cited passage in Modern Railways in November 1964. en.wiktionary.org
    • The passage describes a Blackpool tram conductor serving each passenger using the exact words “by a simple crank of a handle”. en.wiktionary.org

Practice

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Origins

Meanings 5, 8, 11–12

English borrowed the word from krank, a form shared by Dutch and Low German. It goes back to Proto-Germanic *krangaz or *krankaz, which meant "bent" or "weak," by way of Proto-West Germanic *krank. German krank, which means "sick," and Scots crank or krank are related.

Meanings 1–4, 6–7, 9–10, 13–15

Old English had crancstæf, a weaving tool or crank, literally a "bent or crooked staff." Middle English shortened it to crank or cronk. The first element of crancstæf is ultimately related to the other word crank.