Definition of aspirating:
(n) :
(linguistics) The puff of air accompanying the release of a plosive or fricative consonant.
(n) :
(linguistics) A sound produced by such a puff of air.
(v) :
(transitive) To remove a liquid or gas by means of suction.
(n) :
A sample of fluid, tissue, or other substance that is withdrawn via aspiration (usually through a hollow needle) from a body cavity, cyst, or tumor.
(v) :
(transitive) To inhale something other than air into one's lungs.
(v) :
(intransitive) To suffocate, having inhaled something other than air.