Caesura

Prosody. a break, especially a sense pause, usually near the middle of a verse, and marked in scansion by a double vertical line, as in know then thyself ‖ presume not God to scan.
Classical Prosody. a division made by the ending of a word within a foot, or sometimes at the end of a foot, especially in certain recognized places near the middle of a verse.
any break, pause, or interruption.
Contemporary Examples

Printed Circuit Blake Gopnik October 3, 2013

Historical Examples

A History of English Versification Jakob Schipper
A History of English Versification Jakob Schipper
The Latin & Irish Lives of Ciaran Anonymous
Delsarte System of Oratory Various
A History of English Versification Jakob Schipper
Legends, Tales and Poems Gustavo Adolfo Becquer
A History of English Versification Jakob Schipper
The Nibelungenlied Unknown
New Latin Grammar Charles E. Bennett

noun (pl) -ras, -rae (-riː)
(in modern prosody) a pause, esp for sense, usually near the middle of a verse line Usual symbol |
(in classical prosody) a break between words within a metrical foot, usually in the third or fourth foot of the line
n.