raw
uncooked
Ce steak est cru.
This steak is raw/undercooked.
vintage; wine classified by quality; (in wine contexts) a vineyard/estate
Ce vin n'est pas un grand cru.
This wine is not a grand cru.
past participle of 'croire' — believed; thought
J'ai cru qu'il était malade.
I thought he was ill.