catch a glimpse of

US /kætʃ ə ˈɡlɪmps ʌv/
UK /kætʃ ə ˈɡlɪmps ʌv/
"catch a glimpse of" picture
1.

一目見る, ちらっと見る

to see something or someone for a very short time or only partially

:
I managed to catch a glimpse of the celebrity as she entered the building.
有名人が建物に入る際に、なんとか一目見ることができた
We only caught a glimpse of the rare bird before it flew away.
その珍しい鳥が飛び去る前に、私たちはわずかに一目見ただけだった