vet

Meanings

1. 1
   noun

   A doctor who treats sick or injured animals.

   I took my dog to the vet for a check-up.

2. 2
   verb

   To examine someone or something carefully to check they are suitable.

   All applicants are carefully vetted before they are hired.

3. 3
   noun

   A person who has served in the armed forces; a veteran.

   The town held a parade to honor the vets.

Possibly by analogy from Etymology 1, in the sense of "verifying the soundness [of an animal]"

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