vet

A veterinarian or veterinary surgeon.

Colin Cameron, a vet who examined the dead animal, said there was "no doubt the kitten would have suffered unnecessarily" before dying.

A veteran (a former soldier or other member of armed forces).

“A former soldier, sir. A vet. Theyʼre all vets, a little shellshocked.”

To thoroughly check or investigate particularly with regard to providing formal approval.

The FBI vets all nominees to the Federal bench.

Sir Humphrey Appleby: Nevertheless we do not admit it (the existence of MI6). Not everyone round this table has been vetted (pun). / Jim Hacker: I thought that's something you do to cats (laugh track). / Sir Humphrey Appleby: Yes indeed, but not ferrets, Minister (laugh track).