1. (

• nut

) usually large hard-shelled seed ;

2. (

• Nut

) Egyptian goddess of the sky ;

3. (

• nut

) a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt ;

4. (

• en ,
• nut

) half the width of an em ;

5. (

• crackpot ,
• crank ,
• nut ,
• nut_case ,
• fruitcake ,
• screwball

) a whimsically eccentric person ;

6. (

• addict ,
• nut ,
• freak ,
• junkie ,
• junky ,

) someone who is so ardently devoted to something that it resembles an addiction; "a golf addict"; "a car nut"; "a bodybuilding freak"; "a news junkie" ;

7. (

• testis ,
• testicle ,
• orchis ,
• ball ,
• ballock ,
• bollock ,
• nut ,
• egg

) one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away" ;

1. (

• nut

) gather nuts ;

1. (

• balmy ,
• barmy ,
• bats ,
• batty ,
• bonkers ,
• buggy ,
• cracked ,
• crackers ,
• daft ,
• dotty ,
• fruity ,
• haywire ,
• kooky ,
• kookie ,
• loco ,
• loony ,
• loopy ,
• nuts ,
• nutty ,
• round_the_bend ,
• around_the_bend ,
• wacky ,
• whacky

) informal or slang terms for mentally irregular; "it used to drive my husband balmy" ;