two-stroke

Short definition from Wiktionary

Adjective

1. 1
   Of or relating to a design of internal combustion engine, the working cycle of which is completed during two strokes of the piston.

Noun

1. 1
   A two-stroke engine.
2. 2
   A vehicle or machine powered by a two-stroke engine.
3. 3
   The fuel used in a two-stroke engine.
4. 4
   Coca-Cola.