Answer:

bookmaker

Answer	Crossword Clue
BOOKMAKER	Reluctant new taxpayer.
BOOKMAKER	Man to see about a horse.
BOOKMAKER	Gambling man.

BOOKMAKER	Las Vegas businessman
BOOKMAKER	Gambling professional
BOOKMAKER	Turf accountant

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.