Nub

Etymology 1
Probably a variant of knub:.

Noun

 * 1)  The innermost section of a chrysalis in a silk cocoon.
 * 2) A small lump or knob.
 * 3) The essence or core of an issue, argument etc.
 * What do you think is the nub of the problem?
 * 1)  The  clitoris.
 * 2) * 2007, Melissa MacNeal, Hot for It, ISBN 075821412X, page 198:
 * “ — and then rub her nub with the bridge of your nose, right where the nerve will drive her straight to the ceiling!”
 * 1) * 2008, Arianna Hart, A Man for Marly, ISBN 1599986388, page 82:
 * When he used his fingers to rub her nub, he didn't have to wait anymore. She exploded for the second time that morning,...
 * 1) * 2010, Beverly Rae, Wild Cat, ISBN 1609282442, page 81:
 * He stroked her, using her movements to increase the pressure on her nub, catching her between his fingers.

Noun

 * 1)  A noob; a newcomer or incompetent.
 * He can't even make himself a peanut butter and jelly sandwich? What a nub.
 * 1) Refers to someone with strange qualities.
 * Her bun is abnormally large! What a nub.

Thesaurus
axiom, axis, bench mark, bilge, blain, bleb, blister, blob, boss, bow, bubble, bulb, bulge, bulla, bump, bunch, burl, button, cahot, cardinal point, center, center of action, center of gravity, centroid, centrum, chief thing, chine, climax, clump, condyle, convex, core, cornerstone, crisis, critical point, crux, dead center, distillate, distillation, dowel, ear, elixir, epicenter, essence, essential, essential matter, fabric, feel, finish, flange, flap, flower, focus, fundamental, gall, gist, gnarl, grain, granular texture, gravamen, great point, handle, heart, high point, hill, hub, hump, hunch, hypostasis, important thing, indentation, inner essence, issue, jog, joggle, kernel, keystone, knob, knot, knub, knur, knurl, landmark, lip, loop, lump, main point, main thing, marrow, material, material point, matter, meat, medium, medulla, metacenter, middle, milestone, mole, mountain, nap, nave, navel, nevus, nubbin, nubble, nucleus, nuts and bolts, omphalos, papilloma, peg, pile, pit, pith, pivot, pock, postulate, principle, protuberance, quid, quiddity, quintessence, real issue, rib, ridge, ring, salient point, sap, shag, short, shoulder, sine qua non, soul, spine, spirit, storm center, structure, stud, stuff, style, substance, substantive point, sum and substance, surface, surface texture, tab, texture, the bottom line, the nitty-gritty, the point, tubercle, tubercule, turning point, umbilicus, upshot, verruca, vesicle, wale, wart, weave, welt, woof

Etymology 2
noob:

Anagrams

 * bun, BUN