Copula

kop′ū-la, n. that which joins together: a bond or tie: ( logic ) the word joining the subject and predicate.— adj. Cop′ular .— v.t. and v.i. Cop′ulāte , to unite in sexual commerce.— n. Copulā′tion , act of copulating.— adj. Cop′ulātive , uniting.— n. ( gram. ) a conjunction that unites ideas as well as words.— adj. Cop′ulātory . [L.,— co- , together, ap-ĕre , to join.]