pin sth down

— Phrasal Verb with pin

/pɪn/ verb [T] (present participle pinning, past tense and past participle pinned)

Definition

› to discover exact details about something: Investigators are trying to pin down the cause of the fire.

(Definition of pin sth down from the Cambridge Learner's Dictionary © Cambridge University Press)

to express disagreement or refuse to do something

Read our blog about how the English language behaves.

Find words and meanings that have just started to be used in English, and let us know what you think of them.