oarlock

1.A support for an oarlock projecting from the side of a racing shell.

一用来托着宝石保持它位置金属板（如在戒钻石或其他首饰也有）。

2.a short light oar used without an oarlock to propel a canoe or small boat.

用来推动轻舟或小船没有桨架短小桨。