Bedeutung von “declare” im Essential American English Dictionary

declare

verb us /dɪˈkleər/ present participle declaring, past tense and past participle declared

B1 to officially tell someone the value of something, for example at an airport, because you might have to pay tax:

Do you have anything to declare?

to announce something publicly or officially:

Scientists have declared that the process is safe.
The country has declared war on its neighbour.

(Definition von “declare” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)