To go on with difficulty.

A form of recycled rubber with a granular consistency, generally from tyres after the removal of steel etc.

present participle of rub off

(slang) Female masturbation.

(informal) A rubber duck (bath toy).

A shirt of the kind worn by rugby players, usually short-sleeved and with a buttoned opening at the neck like a polo shirt, but with a stiffer collar.

(aviation, informal) In a commercial passenger airliner, the dense, forest-like profusion of suspended tubes, straps, bags, and masks which results when large numbers of oxygen masks are deployed.

An iron guard on a wagon body, against which a wheel rubs when cramped too much.

Galega officinalis, a herbaceous plant in the Faboideae subfamily.

(archaic) A bad bargain. / (archaic) A forfeit paid for withdrawing from a bargain.