from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A half line of verse, especially when separated rhythmically from the rest of the line by a caesura.
- n. An incomplete or imperfect line of verse.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An approximate half-line of verse, separated from another by a caesura, often for dramatic effect
- n. An unfinished line of verse
from the GNU version of the Collaborative International Dictionary of English
- n. Half a poetic verse or line, or a verse or line not completed.
from The Century Dictionary and Cyclopedia
- 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.
Latin hēmistichium, from Greek hēmistikhion : hēmi-, hemi- + stikhos, line; see steigh- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)