knob

中文： 球形把手、旋钮、疙瘩

1. A rounded protuberance, especially one arising from a flat surface; a fleshy lump or caruncle.
2. A rounded control switch that can be turned on its axis, designed to be operated by the fingers.
3. A ball-shaped part of a handle, lever, etc., designed to be grabbed by the hand.
4. A rounded ornament on the hilt of an edged weapon; a pommel.
5. A prominent, rounded bump along a mountain ridge.
6. A prominent rounded hill.
7. A woman's breast. (slang)
8. The head of the penis; the glans. (slang)

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