I. əˈhed adverb
Etymology: a- (I) + head
1. : in or toward a position in advance
set the clock ahead
: farther in the direction in which a person or thing is going
send your dog ahead — Corey Ford
the road stretches straight ahead
: forward , onward
the propeller is turning ahead
2. : at or toward a point of time before another
he moves the spring starting of chicks ahead to late fall — New England Homestead
: in advance
plan ahead
3. : in or toward a position of advantage
facilities for pushing ahead talented students — Saturday Review
II. adjective
1. : farther in the direction in which a person or thing is going : farther forward in time — used postpositively
advance to the next job ahead — W.J.Reilly
2. : leading toward a position of advantage — used postpositively
a way ahead for aspiring youths