nut

be nuts about (or on) be very enthusiastic about or fond of. informal

1934Dashiell HammettThe Thin Man She told me she had this job with Wynant and he was nuts about her and she was sitting pretty.

do your nut be extremely angry or agitated. British informal

☞ In this phrase and in off your nut below, nut means 'head'.

for nuts even tolerably well. British informal

1934Angela ThirkellWild Strawberries That Miss Stevenson can't play for nuts.

from soup to nuts: seesoup.

nod the nut: seenod.

nuts and bolts the basic practical details of something. informal

off your nut out of your mind; crazy. informal

take (or use) a sledgehammer to crack a nut: seesledgehammer.

a tough (or hard) nut (to crack) someone who is difficult to deal with or hard to beat; a formidable person. informal