a ring or tube made of rubber, in particular a circular air-filled tube used as an aid to swimming

(chemistry) a flexible rubber scraper attached to a glass rod, used in chemistry laboratories for amalgamating and transferring solid residues in gravimetric analysis.

Ficus elastica, a tropical tree used as a houseplant native to Asia. / A tree which can produce latex, a rubber tree, including Hevea brasiliensis.

Expanded latex. / (informal) Expanded polyurethane, the padding often used in cars and furniture.

plural of rubber ducky

(informal) A rubber duck (bath toy).

plural of rubber duck

Third-person singular simple present indicative form of rubber duck

A toy, made from rubber or rubber-like plastic, shaped like a duck; usually a floating bathtub toy. / (nautical, slang) An inflatable boat.

(transitive, programming) To act as a sounding board for a programmer that is debugging their code, facilitating rubber duck debugging.