Meaning of “beware” in the English Dictionary

british dictionary

"beware" in British English

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bewareverb [ only in infinitive and imperative ]

uk /bɪˈweər/ us /bɪˈwer/

C1 [ I or T ] used to warn someone to be very careful about something or someone:

Beware salespeople who promise offers that seem too good to be true.
You should beware of undercooked food when staying in hot countries.
Beware of falling asleep while sunbathing.

[ I ] used on signs to warn people of something dangerous:

Beware of the dog.
Beware - poisonous chemicals.

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(Definition of “beware” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"beware" in American English

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bewareverb [ I/T ]

us /bɪˈweər/

to be very careful about something or someone:

[ I ] In grassy areas, beware of ticks.

(Definition of “beware” from the Cambridge Academic Content Dictionary © Cambridge University Press)