Tetrameter
Tetrameter , noun
[Latin tetrametrus, Greek {not transcribed}; te`tra- (see Tetra-) + {not transcribed} a measure: compare French tétramètre.]
(GR. & Latin Prosody) A verse or line consisting of four measures, that is, in iambic, trochaic, and anapestic verse, of eight feet; in other kinds of verse, of four feet.