un ‧ cov ‧ er /ʌnˈkʌvə $ -ər/ BrE AmE verb [transitive]
[ Word Family: noun : ↑ cover , ↑ coverage , ↑ covering ; adjective : ↑ undercover , ↑ covered ≠ UNCOVERED ; verb : ↑ cover ≠ ↑ uncover ; adverb : ↑ undercover ]
1 . to find out about something that has been kept secret ⇨ discover :
Customs officials uncovered a plot to smuggle weapons into the country.
2 . to remove the cover from something