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.

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

present participle of knob

A pattern of knobs or lumps. / (UK, vulgar, slang) A session of penetrative sexual intercourse.

simple past tense and past participle of knob

Having a knob or knobs.

plural of knobbing

plural of knob

(idiomatic, UK) Embellished. / (idiomatic, UK) (manner) Extremely; in a similar way, but taken to an extreme.

(vulgar, slang) Smegma which is secreted between the glans penis and foreskin.