tic-tac man
noun /ˈtɪk tæk mæn/
/ˈtɪk tæk mæn/
(plural tic-tac men)
(British English)- (in the past) a bookmaker (= a man who takes bets) at a horse racing course, who communicated information to other bookmakers there by means of tic-tac, a special language of signals involving movements of the hands and arms