(poker) Alternative form of two pair

plural of pocket pair

plural of au pair

plural of homologous pair

plural of kilobase pair

(genetics) One thousand base pairs in succession (used as a measure of the size of a nucleic acid or a gene)

(chiefly Britain, rare or dated) A flight of stairs

plural of coxless pair

plural of inversion pair

(transitive) To put into pairs; to put into a group of two. / (intransitive) To get into pairs; to join together to make a group of two.