Meaning

• Approval, agreement, or instruction to begin or proceed.

  "You can start as soon as you get the go-ahead from the president."

Meaning

• Progressive; exerting leadership.

  "I work for a very go-ahead company that's always looking for new ideas."

• Dashing; energetic.

• Being a score which gives the scoring team or player the lead in the game.

  "The pitcher gave up the go-ahead run in the top of the ninth inning."