copula Meaning, Definition & Usage

  1. noun an equating verb (such as `be' or `become') that links the subject with the complement of a sentence
    copulative; linking verb.

WordNet

Cop"u*la noun
Etymology
L., bond, band. See Couple.
Definitions
  1. (Logic & Gram.) The word which unites the subject and predicate.
  2. (Mus.) The stop which connects the manuals, or the manuals with the pedals; -- called also coupler.

Webster 1913