From Old English 'cnotta' (knot), from Proto-Germanic *knuttō — the silent 'k' was once pronounced.
A fastening made by tying rope; a unit of nautical speed.
From Old English 'cnotta' (knot, intertwining), from Proto-Germanic *knuttō, from PIE *gnod- (lump). The silent 'k' was once pronounced. Key roots: *gnod- (PIE: "lump, knob").