ˈbril noun
( plural brill or brills )
Etymology: perhaps from Cornish brȳel, brȳthel mackerel — more at brit
1. : a European flatfish ( Bothus rhombus, syn. Rhombus laevis ) that is related to the turbot and is valued as food
2. : any of various flatfishes especially of the family Bothidae : turbot — see petrale sole