noun.
A crossgrained protuberance; a nodule; a boss or projection.
noun.
A lined or crossgrained pattern of ridges or indentations rolled or pressed into a part for grip.
verb.
To roll or press a pattern of ridges or indentations into a part for grip.
Word Usage
"It's that scanner that peeks under your clothing, creating a ghostly but realistic image of your naked body, accurate down to every curve, knurl, protuberance, carbuncle, wen, bleb, wart and wattle and garfunkel."