Noun: twosome too-sum- Two items of the same kind
"The twosome walked hand in hand, like lovers twain";
- couple, pair, twain, brace, span, yoke, couplet, duo, duet, dyad, duad
- A pair who associate with one another
"an inseparable twosome";
- couple, duo, duet
Derived forms: twosomes
Type of: 2, II, pair, two