u

Short definition from Wiktionary

Character

1. 1
   The twenty-first letter of the English alphabet, called u and written in the Latin script.
2. 2
   The twenty-first letter of the English alphabet, called u and written in the Latin script.
3. 3
   Something shaped like the letter U: A U-turn ('turned a U in the road')
4. 4
   Something shaped like the letter U: A double upright cordon espalier (also double U, triple U).

Noun

1. 1
   The name of the Latin-script letter U/u.
2. 2
   A thing in the shape of the letter U
3. 3
   A U-turn.
4. 4
   Abbreviation of university.
5. 5
   Abbreviation of Sunday.
6. 6
   A film with the film classification U (“universal”).
7. 7
   An honorific to a Burmese man

Pronoun

1. 1
   Abbreviation of you.

Adjective

1. 1
   Abbreviation of underwater.
2. 2
   Abbreviation of upper class (“characteristic of the upper classes, particularly in the use of language”).
3. 3
   Abbreviation of united.
4. 4
   Abbreviation of upper.
5. 5
   Usually in parentheses: abbreviation of unclassified.
6. 6
   Abbreviation of universal (“suitable for all ages”), in a film certificate.

Preposition

1. 1
   Abbreviation of under.
2. 2
   Abbreviation of up.
3. 3
   Abbreviation of under, prefix under-.

Proper noun

1. 1
   An Austroasiatic language spoken in China.
2. 2
   Alternative form of Ü (“Tibetan language”).

Symbol

1. 1
   Chemical symbol for uranium.
2. 2
   Rack unit, the unit of length defined as 1.75 inches.