Is “Rub” a Scrabble word?

1. 1.An act of rubbing.

   “Give that lamp a good rub and see if any genies come out”

2. 2.A difficulty or problem.

3. 3.A quip or sarcastic remark.

Synonyms: catch, glitch, hiccup, hitch, kink, snag

1. 1.To move (one object) while maintaining contact with another object over some area, with pressure and friction.

   “I rubbed my hands together for warmth.”

2. 2.To rub something against (a second thing).

   “I rubbed the glass with the cloth.”

3. 3.To be rubbed against something.

   “My shoes are beginning to rub.”