chub /t͡ʃʌb/noun 10verb 1forms 3phrases 1 noun10 •One of various species of freshwater fish of the Cyprinidae or carp family. •A European chub (Squalius cephalus, syn. Leuciscus cephalus) •In Europe, its close relatives, notably the fallfish. •Any of various vaguely related marine or freshwater fishes. •In North America, a black bass. •(slang) A chubby, plump, or overweight person. •(slang) An overweight gay man who is part of the chubby subculture. •(informal) Excess body fat.so all this chub and lack of fitness will be something I embrace in two days when I quit my new diet and exercise plan. — 2014 •(slang) An erection of the penis.The DA was a hot young woman who gave me a chub when she finally showed up in a business skirt with a slit in the side, after I had sat around waiting for her for three hours. — 2018 •A plastic or other flexible package of meat, usually ground meat or luncheon meat.A typical gelbwurst chub is 24 inches long and about 2V2 inches thick. — 2001 verb1 •(US) To stop a bill from being passed using procedural delays.The Texas House, where, with the 140-day legislative session nearing an end, the Democratic minority "chubbed" a voter ID bill, and coincidentally more, to death. — 2009 formschubbed · chubbing · chubs Phrases with chub chub upTo become chubby; to grow fat.