Meaning of A HELL OF A in English

A HELL OF A

{adj. or adv. phr.}, {informal} Extraordinary; very. * /He made a hell of a shot during the basketball game./ * /Max said seven months was a hell of a time to have to wait for a simple visa./ * /The fall Max took left one hell of a bruise on his knee./

Slang English vocab.      Английский сленговый словарь.