To get involved in; to investigate or explore.
To divide, to be a factor of.
To attack; to assault physically.
Used other than figuratively or idiomatically: see go, into.
To expose something to public examination or discussion.
To provide with a vent.
To replace stale or noxious air with fresh.
To provide manual or mechanical breathing to a patient.
To circulate air through a building, etc.
To expose something to the circulation of fresh air.
To shoot with a firearm; to pierce with bullets.