definition of
ahead

[1] #1 ahead r. [in front, before] at or in the front; "I see the lights of a town ahead"; "the road ahead is foggy"; "staring straight ahead"; "we couldn't see over the heads of the people in front"; "with the cross of Jesus marching on before". wn

[2] #2 ahead r. [forward] toward the future; forward in time; "I like to look ahead in imagination to what the future may bring"; "I look forward to seeing you". wn

[3] #3 ahead r. [onward, onwards, forward, forwards, forrader] in a forward direction; "go ahead"; "the train moved ahead slowly"; "the boat lurched ahead"; "moved onward into the forest"; "they went slowly forward in the mud". wn

[4] #4 ahead s. [in the lead, leading] having the leading position or higher score in a contest; "he is ahead by a pawn"; "the leading team in the pennant race". wn

[5] #5 ahead r. [in advance, beforehand] ahead of time; in anticipation; "when you pay ahead (or in advance) you receive a discount"; "We like to plan ahead"; "should have made reservations beforehand". wn