An example of a look-in is a mother checking on her sleeping baby.
I could look in their windows, and God forgive me, I did.
Not once did he look in their direction.
He walked around it and then leaned down to look in the window.
Mildred O'Malley, his wife was not listed as living in Massachusetts and the name was too common for Betsy to look in all the states.
I can't say for sure because I'm on the outside, trying to look in and trying not to get caught, but they've pulled the curtain closed on me.