Other forms: oarlocks
An oarlock is the fitting an oar pivots in. Lose an oarlock.
Without it an oar has nothing to push against and the boat goes nowhere. An oarlock is the British rowlock, and the American spelling shows what it does more plainly.
1nounoarlockThe fitting an oar pivots in.
“One oarlock dropped over the side and that was the end of it.”
oarlock is a fitting.
Oar plus lock. The older English form is rowlock, which is a worn-down version of the same compound and is pronounced rollock.
From oar + lock.
Etymology from Wiktionary, CC BY-SA