• Adv: earlier in time; previously; examples: "I had known her before", "as I said before", "he called me the day before but your call had come even earlier", "her parents had died four years earlier", "I mentioned that problem earlier"
• Adv: at or in the front; examples: "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"