D defs.my
Entry 2 senses Webster, 1913

Ahead

/əh-ĕd'/ · A·head · IPA /əˈhɛd/
01 adv. In or to the front; in advance; onward.
  1. 1.
    In or to the front; in advance; onward.
    “The island bore but a little ahead of us.” Fielding.
  2. 2.
    Headlong; without restraint.[Obs.]
Phrases & compounds
To go ahead — To go in advance.
To get ahead of — To get in advance of.