knobble - a small knob

nailhead - flattened boss on the end of nail opposite to the point

projection - any structure that branches out from a central support

doorhandle, doorknob - a knob used to release the catch when opening a door (often called `doorhandle' in Great Britain)

handgrip, handle, grip, hold - the appendage to an object that is designed to be held in order to use or move it; "he grabbed the hammer by the handle"; "it was an old briefcase but it still had a good grip"

stop - (music) a knob on an organ that is pulled to change the sound quality from the organ pipes; "the organist pulled out all the stops"

convex shape, convexity - a shape that curves or bulges outward

decoration, ornament, ornamentation - something used to beautify

hilt - the handle of a sword or dagger