oarlock

An oarlock is a device that attaches an oar to the side of a rowboat. Most oarlocks are built into the sides of the boat, and they make rowing much easier.

You're less likely to lose an oar if your boat has oarlocks, and they also provide a base or fulcrum for the oars. On a racing boat, the oarlocks are especially designed for ease of moving the oar, while the oarlocks on your old metal dinghy are likely to be simpler. In either case, they can be made of metal, wood, or plastic, and are called "rowlocks" or "spurs" in the UK and "gates" in Australia.

Definitions of oarlock
1

n a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing

Synonyms:
peg, pin, rowlock, thole, tholepin
Type of:
holder
a holding device

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.