Related Clues:
- Arrive via plane
- Gain entry
- Find each other friendly
- Reach its destination, as a train
- Mount or board
- Board, as an airplane
- Enter, as a vehicle
- Climb aboard (2 words)
- Prepare to 127 Across
- Become accepted
- Step aboard
- Instruction given through a rolled-down window
- Hit it off, not say vertically
- Advance fare to board
- Be accepted as a member (2 words)