'Trimeter' definitions:

Definition of 'Trimeter'

From: GCIDE

Trimeter \Trim"e*ter\, a. [L. trimetrus, Gr. ?; ? (see Tri-) + {?} measure. See Meter measure.] (Pros.) Consisting of three poetical measures. -- n. A poetical division of verse, consisting of three measures. --Lowth. [1913 Webster]