A word, usually a verb, used to link the subject of a sentence with a predicate (usually a subject complement or an adverbial), that unites or associates the subject with the predicate.
A device that connects two or more keyboards of an organ.
A function that represents the association between two or more variables, independent of the individual marginal distributions of the variables.
The act of copulation; mating.
A verb that links a subject to a complement that refers to the subject.