heavy hitter 
(also big hitter)
noun informal
An important or powerful person: its membership includes many heavy hitters in the insurance industry...
- Neither do we include Wall Street big hitters who spend time in London.
- Usually these are big hitters and we're looking at investors with €500,000 and upwards, ‘he said.’
- He said: ‘What I think is superb about this campaign is the big hitters of the industry in this town have signed up to it.’
- queen cake
- queen cat
- queen cell
- Queen Charlotte Islands
- Queen City
- queen closer
- queen conch
- Queen Consort
- queencraft
- queen cup
- queendom
- Queen Dowager
- queen-elect
- Queen Elizabeth
- Queen Elizabeth is dead
- Queen Elizabeth's pocket-pistol
- Queen, Ellery
- queen excluder
- queenfish
- queen-flower
- queen-gold
- queenhood
- queenie
- Queen in Council
- queening square