Synonym: Nut, addict, ball, ballock, bollock, crackpot, crank, egg, en, freak, fruitcake, junkie, junky, nut case, nutcase, orchis, screwball, testicle, testis. Similar words: minute, peanut, nutrient, diminutive. Meaning: [nʌt] 
n. 1. usually large hard-shelled seed 2. Egyptian goddess of the sky 3. a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt 4. half the width of an em 5. a whimsically eccentric person 6. someone who is so ardently devoted to something that it resembles an addiction 7. one of the two male reproductive glands that produce spermatozoa and secrete androgens. v. gather nuts.
n. 1. usually large hard-shelled seed 2. Egyptian goddess of the sky 3. a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt 4. half the width of an em 5. a whimsically eccentric person 6. someone who is so ardently devoted to something that it resembles an addiction 7. one of the two male reproductive glands that produce spermatozoa and secrete androgens. v. gather nuts. 
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1 He that will eat the nut must first crack the shell. 
2 He cracked his nut on the ceiling.
3 Take your spanner, and tighten the nut.
4 What a nut he is!
5 It is a tough nut for him to crack.
6 It is a hard nut for him to crack.
7 You must be off your nut, going out in the weather like this.
8 The nut isn't tight enough yet: give it another screw.
9 The nut has worked off.
10 He's a tough nut to crack.
11 My dad is such a nut.
12 She'll do her nut when she sees the mess.
13 We heard your sister doing her nut.
14 Ian's a tennis nut - he plays every day.
15 You must be off your nut!
16 The bird picked the nut out of the shell.
17 The nut has been worked on the spindle.
18 Oh come on, use your nut !
19 He's a complete nut, if you ask me.
20 There's some nut out there with a gun.
21 It doesn't matter; only a nut started.
22 He's a hard nut to crack.
23 Spread the nut mixture evenly over the bottom.
24 You can't do that! Are you off your nut?
25 What are you,(sentencedict.com) some kind of nut?
26 Use a wrench to loosen the nut.
27 The final exam was a tough nut.
28 She'll do her nut when she finds out!
29 He that would eat the kernel must crack the nut.
30 I told him what she had said about him and he did his nut.