a projecting part, usually rounded, forming the handle of a door, drawer, or the like.

a rounded lump or protuberance on the surface or at the end of something, as a knot on a tree trunk.

Architecture . an ornamental boss, as of carved work.

a rounded hill, mountain, or elevation on a ridge.

to produce a knob on.

to furnish with a knob.

(in stone cutting) to knock off (excess stone) preparatory to dressing; knobble; skiffle.

noun

bulge , bulk , bump , bunch , doorknob , hump , knot , knurl , latch , lever , nub , opener , projection , protrusion , protuberance , snag , stud , swell , swelling , trigger , tumor , jut , overhang , lump , boss , button , dial , excrescence , finial , handle , hardswelling , heel , hill , knoll , knop , knosp , mountain , node , nodule , pommel , switch , tubercle