"token worn to indicate the wearer's occupation, preference, etc.," especially "device worn by servants or followers to indicate their allegiance," c. 1400, bagge, from Anglo-French bage (mid-14c.) or Anglo-Latin bagis, plural of bagia "emblem," all of unknown origin. The figurative sense "mark or token" of anything is by 1520s.
type of low, nocturnal, burrowing, carnivorous animal, 1520s, perhaps from bage "badge" (see badge) + reduced form of -ard "one who carries some action or possesses some quality," suffix related to Middle High German -hart "bold" (see -ard). If so, the central notion is the badge-like white blaze on the animal's forehead (as in French blaireau "badger," from Old French blarel, from bler "marked with a white spot;" also obsolete Middle English bauson "badger," from Old French bauzan, literally "black-and-white spotted"). But blaze (n.2) was the usual word for this.
An Old English name for the creature was the Celtic borrowing brock; also græg (Middle English grei, grey). In American English, the nickname of inhabitants or natives of Wisconsin by 1833.
"to attack persistently, worry, pester," 1790, from badger (n.), based on the behavior of the dogs in the medieval sport of badger-baiting, still practiced in late 19c. England as an attraction to low public houses. Related: Badgered; badgering.
A badger is put into a barrel, and one or more dogs are put in to drag him out. When this is effected he is returned to his barrel, to be similarly assailed by a fresh set of dogs. The badger usually makes a most determined and savage resistance. [Century Dictionary]
"light railery, playful banter," 1650s, from French badinage "playfulness, jesting," from badiner (v.) "to jest, joke," from badin "silly, jesting" (16c.), from Old Provençal badar "to yawn, gape," from Late Latin badare "to gape," from *bat- "to yawn" (see abash). One who indulges in it is a badineur.
"arid, highly eroded regions of the upper midwestern U.S.," 1850, from bad (adj.) + land (n.). Translating French Canadian Mauvaises Terres, a trapper's word, in reference to the difficulty of traversing them. Applied to urban districts of crime and vice since 1892 (originally with reference to Chicago).