Definition of stag:
(n) :
the adult
male of the red
deer (Cervus elaphus), a large European species closely related to the American
elk, or wapiti; the male of certain other
species of large deer
"the stag will be held in the hotel's ballroom"
(v) :
to act as a "stag", an irregular dealer in stocks; to
watch; to dog, or keep track of