Definitions

1. adverb

in front of something, or in the direction of something that is being faced

“She walked ahead of the group to scout out the terrain.”

2. noun

the part of a route or a path that is in front of the present position

“We’ve been on the road for hours, but the sign said we still had a long way ahead.”

3. preposition

in front of something, or in the direction of something that is being faced

“The car is driving straight ahead down the highway.”

4. adjective

existing or occurring before the present time, or in the future

“We have to plan for the months ahead and make sure we have enough supplies.”