This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A protuberance or knob.

n. A small lump.

n. The essence; the core: the nub of a story.

n. A noob; a newcomer or incompetent.

n. The innermost section of a chrysalis in a silk cocoon.

n. A small lump or knob.

n. The essence or core of an issue, argument etc.

n. The clitoris.

v. To hit the ball weakly.

v. To push; to nudge; also, to beckon.

n. A jag, or snag; a knob; a protuberance; also, the point or gist, as of a story.

n. A knob; a protuberance.

n. In cotton- and wool-carding, a snarl; an entanglement; a knot; a knub.

n. Point; pith; gist.

To push.

To beckon.

To hang (Davies); nab.

n. the choicest or most essential or most vital part of some idea or experience

n. a small lump or protuberance

n. a small piece

"The diagram also shows that a rod should be pushed ideally 1. 25W, although because each nub is of length W, the push amount could theoretically range from fractionally more than 0. 25W to fractionally less than 2. 25W."

jut    swelling    excrescence    prominence    bump    protuberance    gibbousness    bulge    protrusion    hump   

push    nudge    knob    protuberance   

Cub    Hub    bub    chubb    club    cub    drub    dub    grub    hub   

nubbin    clit    quim    nipple    mouthfeel    cunt    red-purple    humblebee    finger-tips    waistline