BOB adjective 1noun 2forms 1phrases 3 adjective1 •Back-of-the-book; denoting those stamps in a catalogue that are not used for the payment of regular postage fees, and are displayed separately in the catalogue after that listing; the division between these two groups varies with the publisher. noun2 •(slang, humorous) Vibrator (device designed to stimulate a woman's genitals). •Acronym of bur oak blight (“a fungal disease of plants”). formsBOBs Phrases with BOB bob underTo go suddenly under the surface of a body of water after a period of floating. bob upTo rise to the surface; to ascend to the surface and remain floating there. two bobA 20-cent coin.
