present participle of think-tank

(informal) Brain

simple past tense and past participle of think-tank

Influenced by think tanks.

(informal) how are you?

(medicine, informal) When diagnosing a patient's symptoms, common ailments should be considered as more probable than rare ones.

The quality of being a thing, or like a thing; tangible reality; thinghood.

(colloquial) A greeting, asking about a person's life; how are you?

(UK, Ireland, Australia, New Zealand, vulgar, figuratively) To think so well of someone that one cannot imagine anything wrong with them.

(US) Alternative spelling of think the sun shines out of someone's arse