['ɔ:lɔk;'әur-]
n.
桨架

[ noun ]
a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing
<noun.artifact>

Oarlock \Oar"lock`\ ([=o]r"l[o^]k`), n. (Naut.),
The notch, fork, or other device on the gunwale of a boat, in
which the oar rests, and that holds the oar in place and acts
as a fulcrum for rowing. Certain oarlocks are designed for
use with oars having attached swivels, which insert into the
oarlock and provide a firm pivot. Same as {Rowlock}[1].

Syn: peg, pin, thole, tholepin, rowlock.
[1913 Webster + WordNet 1.5 +PJC]