—n. 1. a person who avoids work and sponges on others; loafer; idler.
2. a tramp, hobo, or derelict.
3. Informal.an enthusiast of a specific sport or recreational activity, esp. one who gives it priority over work, family life, etc.: a ski bum; a tennis bum. 4. Informal.an incompetent person.
5. a drunken orgy; debauch.
6. on the bum,Informal. a. living or traveling as or in a manner suggesting that of a hobo or tramp.
b. in a state of disrepair or disorder: The oven is on the bum again.
—v.t. 1. Informal.to borrow without expectation of returning; get for nothing; cadge: He's always bumming cigarettes from me. 2. Slang.to ruin or spoil: The weather bummed our whole weekend.
—v.i. 1. to sponge on others for a living; lead an idle or dissolute life.
2. to live as a hobo.
3. bum around,Informal.to travel, wander, or spend one's time aimlessly: We bummed around for a couple of hours after work. 4. bum (someone) out,Slang.to disappoint, upset, or annoy: It really bummed me out that she could have helped and didn't.
—adj.Slang. 1. of poor, wretched, or miserable quality; worthless.
2. disappointing; unpleasant.
3. erroneous or ill-advised; misleading: That tip on the stock market was a bum steer. 4. lame: a bum leg.
Pronunciation: (bum),[key] —n.Chiefly Brit. Slang. the buttocks; rump.
Pronunciation: (bum),[key] —n.Mil. Slang. 1. a reproduction of a document made with copying equipment.
2. a bag into which classified waste is put in preparation for destruction.