n. In prosody: The exact or approximate half of a line or verse; one of the two commata or sections of a line divided by the cesura or dieresis.n. Any group of words forming part of a line, and considered or cited by itself; an incomplete or unfinished line.n. A colon, comma, or group of feet of less extent than the average line, or than the other lines of the same poem or stanza, standing metrically by itself, or so written, as, for example, an epodic line, ephymnium, or refrain.