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.]
- Two corresponding persons or items, similar in form or function and matched or associated: a pair of shoes.
- One object composed of two joined, similar parts that are dependent upon each other: a pair of pliers.
- Two persons who are married, engaged, or dating.
- Two persons who have something in common and are considered together: a pair of hunters.
- Two mated animals.
- Two animals joined together in work.
- Games Two playing cards of the same denomination.
- Two members of a deliberative body with opposing opinions on a given issue who agree to abstain from voting on the issue, thereby offsetting each other.
- Chemistry An electron pair.
- To arrange in sets of two; couple.
- To join in a pair; mate.
- To provide a partner for.
- To form pairs or a pair.
- To join in marriage; mate.