A gear wheel, the cogs of which engage with those of a larger toothed wheel or of a rack, so that motion is imparted form one to the other; in a pair or set of gears, the smaller gear.

【机】(与大齿轮相接的)小齿轮；副齿轮。

The last group of bones of a bird's wing, corresponding to the human hand and wrist.

鸟翼骨骼之末部(类似人之手及腕)；翮。

A wing.

翼；翅。

Any wing feather.

鸟翅上的羽毛。

To bind the wings of, or to clip the last segment of the wings of.

缚住或剪去(鸟的)翼端。

To bind.

缚((to))。

To confine.

捆绑；拘束。