(neologism) The unsettling awareness of one's own heartbeat

(derogatory) A bad thing; an object of poor quality.

plural of rubber match

(astronomy) An astronomical object that is not a monolith, but rather consists of numerous pieces of rock that have coalesced under the influence of gravity.

plural of rubble pile

Obsolete spelling of rhubarb

plural of rubber baby buggy bumper

plural of rubber check

kosovorotka

plural of rubashka