verb
present participle and gerund of knob
noun
A pattern of knobs or lumps.
The amount by which a bowl is wider in the middle than at the top and bottom.
(UK, vulgar, slang) A session of penetrative sexual intercourse or the act of sexual penetration.
(mining) The process of rough dressing stone; the act of cutting off projecting points from quarried stone.
The practice of cutting off the sharp tips of the horns of cattle, leaving rounded knobs.