A rounded protuberance, especially one arising from a flat surface; a fleshy lump or caruncle.

A rounded control switch that can be turned on its axis, designed to be operated by the fingers.

A ball-shaped part of a handle, lever, etc., designed to be grabbed by the hand.

A prominent, rounded bump along a mountain ridge.

(geography) A prominent rounded hill.

(slang, chiefly in the plural) A woman's breast.

(vulgar, slang, chiefly UK, Ireland) A noun "knob" represents the head of the penis, and by extension, it can also refer to a contemptible person.

(vulgar, slang) The clitoris.

(cooking) A dollop, an amount just larger than a spoonful (usually referring to butter).

A chunky branch-like piece, especially of a ginger rhizome.

A bulb of the garlic plant consisting of multiple cloves.

(slang, US) A freshman at The Citadel, The Military College of South Carolina.

(Britain, slang, vulgar, transitive, of a man) To have sex with.