noun

1. A hard-shelled seed.

   “There are many sort of nuts: peanuts, cashews, pistachios, Brazil nuts and more.”

2. A piece of metal, usually square or hexagonal in shape, with a hole through it having machined internal threads, intended to be screwed onto a bolt or other threaded shaft.

3. A crazy person.

   “He was driving his car like a nut.”

Synonyms: ball, bollock, nads, bonce, noodle, loony, nutbag, nutcase

verb

1. (mostly in the form "nutting") To gather nuts.

2. To hit deliberately with the head; to headbutt.

3. (mildly) To orgasm; to ejaculate.

Synonyms: blow a nut, bust a nut, Glasgow kiss, Liverpool kiss, butt, loaf

adjective

1. Insane, mad.

   “After living on the island alone for five years, he eventually went nuts.”

2. Crazy, mad; unusually pleased or, alternatively, angered.

   “I just go nuts over her fantastic desserts.”

3. Very fond of (on) someone.

   “He's been nuts on her since the day they met.”

Synonyms: nutty

interjection

1. Indicates annoyance, anger, or disappointment.

   “Nuts! They didn't even listen to what I had to say.”

2. Signifies rejection of a proposal or idea, as in forget it, no way, or nothing doing; often followed by to.

   “They want me to pay $5 for a banana? Nuts to that!”