in pairs, especially one of each sex

(idiomatic, baseball) In baseball, meeting two out of two attempts at-bat. Specifically, it means the batter has reached base safely two out of two times. / (idiomatic) Successful at both of two efforts.

A numerical value equal to 2; this many dots (••). / Describing a set or group with two elements.

The digit/figure 2. / (US, informal) A two-dollar bill. / A child aged two. / A playing card featuring two pips. / Two o'clock, either a.m. or p.m.

(set phrase) Into two parts. / (theater) Performed further back than "in one", but still not fully upstage.

(collectible card games) A card included in a deck twice.

plural of two. / The age of two; two years old. / (UK, prison slang) The cells located on the first floor.

(poker slang) A pair of twos. / (sports) A reserves team.

(transitive, MLE) To share a cigarette with someone after smoking half of it.

Grouped by pairs; arranged in groups of two.