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Related to pair: au pair
1. a male and a female animal of the same species, esp such animals kept for breeding purposes
2. Parliamentary procedure
a. two opposed members who both agree not to vote on a specified motion or for a specific period of time
b. the agreement so made
3. two playing cards of the same rank or denomination
4. Cricket short for a pair of spectacles (see spectacles (sense 2))
5. Logic Maths
a. a set with two members
b. an ordered set with two members
Two like conductors employed to form an electric circuit.
Two parts in a kinematic mechanism that mutually constrain relative motion; for example, a sliding pair composed of a piston and cylinder.
(science and technology)
A set of two things that are identical or nearly so, or are designed to function as a unit.