鑽牛角

lit. honing a bull's horn; fig. to waste time on an insoluble or insignificant problem / to bash one's head against a brick wall / a wild goose chase / a blind alley / to split hairs / same as idiom 鑽牛角尖|钻牛角尖

to drill / to bore / to get into / to make one's way into / to enter (a hole) / to thread one's way through / to study intensively / to dig into / to curry favor for personal gain

an auger / diamond

ox / cow / bull / CL:條|条[tiao2],頭|头[tou2] / newton (abbr. for 牛頓|牛顿[niu2 dun4]) / (slang) awesome

cow horn

surname Jue

angle / corner / horn / horn-shaped / unit of money equal to 0.1 yuan, or 10 cents (a dime) / CL:個|个[ge4]

role (theater) / to compete / ancient three legged wine vessel / third note of pentatonic scale

lit. to penetrate into a bull's horn (idiom); fig. to waste time on an insoluble or insignificant problem / to bash one's head against a brick wall / a wild goose chase / a blind alley / to split hairs