keep (one's)/a beady eye on (someone or something)

keep (one's)/a beady eye on (someone or something)

To watch something very closely or carefully; to be particularly attentive to or vigilant about something. Used especially when one is distrustful or overly protective. The toddler kept a beady eye on his toys throughout the party, screaming at any child who dared to play with his things. One of the most difficult aspects of trying to curb the issue for law enforcement is that it's impossible for them to keep their beady eye on every corner of the dark web at once.
See also: beady, eye, keep, on
Farlex Dictionary of Idioms.

keep a beady ˈeye on somebody/something

,

have your beady ˈeye on somebody/something

watch somebody/something very carefully because you do not really trust them/it: He always kept a beady eye on his employees.
See also: beady, eye, keep, on, somebody, something
Farlex Partner Idioms Dictionary
See also:
  • (one) never would have guessed
  • all right
  • (one's) heart is set on (something)
  • (one) could use (something)
  • (I) wouldn't (do something) if I were you
  • a fast talker
  • a horse of another
  • a horse of another color
  • a horse of another colour
  • (one) doesn't give a rip (about something)