Definition of pair :
1. A married couple; a man and wife.
2. A number of things resembling one another, or belonging together; a set; as, a pair or flight of stairs. A pair of beads. Chaucer. Beau. & Fl. Four pair of stairs. Macaulay. [ Now mostly or quite disused, except as to stairs.]
3. A single thing, composed of two pieces fitted to each other and used together; as, a pair of scissors; a pair of tongs; a pair of bellows.
4. A union of two conductors, as bars or wires of dissimilar metals joined at their extremities, for producing a thermoelectric current.
5. In a mechanism, two elements, or bodies, which are so applied to each other as to mutually constrain relative motion.
6. Same as To pair off. See phrase below.
7. To be joined in paris; to couple; to mate, as for breeding.
8. To engage ( one's self) with another of opposite opinions not to vote on a particular question or class of questions.
9. To impair.
10. To suit; to fit, as a counterpart.
11. To unite in couples; to form a pair of; to bring together, as things which belong together, or which complement, or are adapted to one another.
12. Two members of opposite parties or opinion, as in a parliamentary body, who mutually agree not to vote on a given question, or on issues of a party nature during a specified time; as, there were two pairs on the final vote.
13. Two of a sort; a span; a yoke; a couple; a brace; as, a pair of horses; a pair of oxen.
14. Two things of a kind, similar in form, suited to each other, and intended to be used together; as, a pair of gloves or stockings; a pair of shoes.
touch, arrange, score, bid, check, partner off, gibe, cards, twain, bracing, mates, flush, equate, hand, couple up, gallus, brougham, pair off, twins, agree, duad, play off, rival, tally, cope with, dummy, organize, buckboard, foursome, mate, duality, group, call, braces, twin, coupling, collate, checkmate, both, range, combo, equalise, meet, pit, cart, grand slam, orthodontic braces, pile, coach, copulate, deal, distich, courtship, partners, fertile, equalize, pairing, caravan, oppose, jibe, breeding, fit, sort, breed, geminate, asexual reproduction, layer, four, order, duette, heap, full house, bridge, pas de deux, parallel, equal, straddle, deuce, cab, correspond, lay out, breeding ground, estrus, two of a kind, reduplicate, carriage, bitstock, tandem, buggy, quartet, fecund, same, set, suspender, dealer, chaise, breeder, couple on, doubleton, duplicate, quintet, chariot, combination
duality (part of speech: noun)
- He produced a pair which had been worn soft in miles of marching. - "Tom of the Raiders", Austin Bishop.
- We were the wrong pair. - "The Brother of Daphne", Dornford Yates.
- In a minute he set on below them a second pair, and this we knew to be a signal of coming violence. - "Hugh Wynne, Free Quaker", S. Weir Mitchell.