catch sight of
US /kætʃ saɪt ʌv/
UK /kætʃ saɪt ʌv/

1.
divisar, avistar
to suddenly see something or someone, especially when you are looking for them
:
•
I managed to catch sight of the rare bird before it flew away.
Logré divisar el ave rara antes de que se fuera volando.
•
She suddenly caught sight of her friend in the crowd.
De repente divisó a su amiga entre la multitud.