As in: I’ll vet this document and then get it out to you. I suppose it means check the veracity more than proofread, but how did it come to have that meaning?
From the Online Etymology Dictionary:
From the practice of requiring racehorses and similar animals to be examined by a vet(erinarian) before races and other competitions.
It seems to refer also to a more general review for reasonableness/correctness/validation. Vetting job applicants, vetting policy decisions. And is vaguely related to what seems to be the latest consultant phrase around here: the “sanity check”.
According to my American Heritage dictionary (1973), it’s an informal British term, meaning to examine carefully.
So there’s no relationship to the word veto? As in something that fails to pass muster gets vetoed?
No relationship.