Trembling, or prone to trembling and shaking.

(colloquial) A form of cheating in the board game Scrabble, where a player drawing tiles from the bag attempts to feel their raised surfaces so as to choose specific letters.

(organic chemistry) Any diacetyl derivative of chitobiose, but especially N,N-diacetylchitobiose that is a breakdown product of chitin

(biology) Any microorganism that bores into a substrate