To attach or secure with pins. / (idiomatic) To identify something (e.g. a decision or plan) clearly or specifically.

(transitive) to attach with nails / (idiomatic, transitive) to make something (e.g. a decision or plan) firm or certain

To dilute; to add water to. / (idiomatic) To make weaker. / (idiomatic) To simplify or oversimplify; to make easier; to make less difficult. / (idiomatic) To make less restrictive; to make more lenient.

a depreciation, or a lowering in the price or value of something

(idiomatic) In a condition of poverty or debility, especially as a result of experiencing a financial or personal setback.

Used other than figuratively or idiomatically: see write, down. / (transitive) To set (something) down in writing; to record something.

(transitive, idiomatic) To defeat (some measure or candidate) by a majority vote.

(American football) The first play in a series that has a maximum of four downs.

Used other than figuratively or idiomatically: see track, down. / (idiomatic) To hunt for or locate; to search for; to find.

(chiefly Britain, Canada) Condition caused by a chromosomal deficiency, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids.