from the corner of (one's) eye(redirected from from the corner of their eye)
from the corner of (one's) eye
Fleetingly. Said of things that one sees quickly and briefly, rather than clearly. From the corner of my eye, I saw something moving in the bushes, and it turned out to be a stray cat.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.