Rob·ber n. One who robs; in law, one who feloniously takes goods or money from the person of another by violence or by putting him in fear.
Some roving robber calling to his fellows. --Milton.
Syn: -- Thief; depredator; despoiler; plunderer; pillager; rifler; brigang; freebooter; pirate. See Thief.
Robber crab. Zool. (a) A purse crab. (b) Any hermit crab.
Robber fly. Zool. Same as Hornet fly, under Hornet.
Robber gull Zool., a jager gull.
n : a thief who steals from someone by threatening violence