Answer: hailacab

AnswerCrossword Clue
HAILACABDecide not to walk, perhaps
HAILACABCry "Taxi!"
HAILACABYell "Taxi!"
HAILACABSeek a ride, in a way
HAILACABRaise one's hand, perhaps
HAILACABWave from the curb, say