watch with an eagle eye

watch somebody/something with an eagle eye

also watch somebody/something with eagle eyes

to watch someone or something very closely and carefully

Usage notes: An eagle is a large bird which can see very well.

The teacher was watching the children with an eagle eye, making sure they behaved themselves.

Name	Pronounced	Usage
Oli	AHL-ee	English
Daffodil	DAF-ə-dil	English (Rare)
Marilynn	MER-ə-lin, MER-lin, MAR-ə-lin, MAR-lin	English
Roque	RO-ke (Spanish)	Spanish, Portuguese
Bartolomeu	-	Portuguese, Galician
Hui	-	Chinese