blinder noun anything excellent, or something excellently well-performed UK,1950 From the “dazzling” nature of anything so-called.
— Bob Young and Micky Moody, TheLanguageofRock’n’Roll, p. 17, 1985
I think they all used to get together in the screws’ tearoom and work out what shitty job to give me the next day. Then they came up with a blinder. — Lenny McLean, TheGuv’nor, p. 43, 1998