top dog

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a person who is in charge (Freq. 3)
- the head of the whole operation
• Syn:
head, chief
• Derivationally related forms:
headship (for: head), head (for: head)
• Hypernyms:
leader
• Hyponyms:
administrator, executive, decision maker, capo, department head,
don, father, general, superior general, general manager, grand dragon,
head of household, secretary