Definitions from Wiktionary (knob)

▸ noun:  A rounded protuberance, especially one arising from a flat surface; a fleshy lump or caruncle.
▸ noun:  A rounded control switch that can be turned on its axis, designed to be operated by the fingers.
▸ noun:  A ball-shaped part of a handle, lever, etc., designed to be grabbed by the hand.
▸ noun:  A rounded ornament on the hilt of an edged weapon; a pommel.
▸ noun:  A prominent, rounded bump along a mountain ridge.
▸ noun:  (geography, chiefly Appalachia, Lancashire) A prominent rounded hill.
▸ noun:  (slang, chiefly in the plural) A woman's breast.
▸ noun:  (slang) The penis; dick.
▸ noun:  The head of the penis; the glans.
▸ noun:  (by extension, derogatory) A contemptible person; a dick.
▸ noun:  (vulgar, slang) The clitoris.
▸ noun:  (cooking) A dollop, an amount just larger than a spoonful (usually referring to butter).
▸ noun:  A chunky branch-like piece, especially of a ginger rhizome.
▸ noun:  A bulb of the garlic plant consisting of multiple cloves.
▸ noun:  (slang, US) A freshman at The Citadel, The Military College of South Carolina.
▸ verb:  (intransitive) protrude
▸ verb:  (transitive) furnish or produce with a knob, knobble
▸ verb:  (British, slang, vulgar, transitive, of a man) To have sex with.
▸ Also see knob

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