Noun
one pair (plural one pairs)
A poker hand that contains two cards of one rank, plus three cards which are not of this rank nor the same as each other.
Seven pairs of birds are currently nesting at a main site in Broomhill, Man. One pair has laid four eggs, and the rest are expected to lay eggs within the week, Froese said. Source: Internet
One pair of fully reserved special train will be run between Mettupalayam and Udagamandalam, and three pairs of fully booked special trains will be operated between Coonoor and Udagamandalam. Source: Internet