book·mak·er 
/ˈbʊkˌmeɪkɚ/ noun
plural book·mak·ers /ˈbʊkˌmeɪkɚ/ noun [count] : a person who decides how likely it is that an event will occur (such as the winning of a race by a particular horse) and receives and pays off bets about it —called also (informal) bookie
— book·mak·ing /ˈbʊkˌmeɪkɪŋ/ noun [noncount]
/ˈbʊkˌmeɪkɪŋ/ noun [noncount]
