knob — OET · Shobdo

knob

noun

1 the drakes have a black bill with a knob at the base:

lump, bump, protuberance, projection, protrusion, bulge, swelling, knot, node, nodule, gnarl, growth, outgrowth, excrescence, carbuncle, tumour;

boss, stud, ball, knop, nub;

technical umbo;

rare tumescence.

2 he fiddled with the knobs on the radio:

dial, button, switch, on/off switch, key.

3 she turned the knob and pushed open the door:

doorknob, handle, door handle, grip, pull.

4 spread a few knobs of butter over the surface:

nugget, nub, nubble, lump, pat, cake, ball, cube, chunk, dollop, piece, bit, portion, wedge, hunk, bar, slab;

British gobbet;

British, informal wodge, gob.

knob Oxford Dictionary of English