—n. 1. a projecting part, usually rounded, forming the handle of a door, drawer, or the like.
2. a rounded lump or protuberance on the surface or at the end of something, as a knot on a tree trunk.
3. Archit.an ornamental boss, as of carved work.
4. a rounded hill, mountain, or elevation on a ridge.
—v.t. 1. to produce a knob on.
2. to furnish with a knob.
3. (in stone cutting) to knock off (excess stone) preparatory to dressing; knobble; skiffle.