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

(literally) Having two faces or plane surfaces. / Deceitful, duplicitous. / Hypocritical.

The number after twenty-one and before twenty-three. Represented in Arabic digits as 22.

A .22 calibre pistol or rifle.

The cardinal number occurring after one thousand nine hundred and ninety-nine and before two thousand and one.

(nautical) The practice of having two alternate watches aboard a ship or vessel.

(Cockney rhyming slang) A state (of upset, worry).

(Canada, slang) A case of twenty-four bottles or cans of beer.

(In both the 12-hour clock and the 24-hour clock) The start of the third hour of the day; 2:00 a.m. (02:00). / (Only in the 12-hour clock) The start of the fifteenth hour of the day; 2:00 p.m. (14:00).

(euphemistic, usually childish) Feces; the act of defecation. / (nautical, slang) A first mate. / A primary assistant; vice-leader.