check at (v.)
[falconry] swerve to pounce on, turn towards, swoop at
[Sir Toby to Fabian, of Malvolio and the letter's riddle] with what wing the staniel checks at it!
[Viola alone, of Feste] He must ... like the haggard, check at every feather / That comes before his eye
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL