the top dog

(informal)

the most important and powerful person in a group Jackson was top dog and he made sure he got what he wanted.

Name	Pronounced	Usage
Dzvonko	-	Macedonian
Calixtus	-	Late Roman
Shahrazad	-	Persian (Rare), Arabic
Frits	FRITS	Dutch
Wekesa	-	Eastern African, Luhya
Tamsyn	TAM-sin	English (British)