Her eyes 'strayed from' her computer to the window. [=she stopped looking at her computer and began looking at/out the window]
a 'straying' husband [=a husband who has sexual relations with a woman who is not his wife]
I matched up the socks in the laundry but I was left with one 'stray'. [=one extra sock]
(..) We keep the fighting here. And Hulk... Smash. Sir. The Council is on. Stark, you got a lot of strays sniffing your tail. I'm just trying to keep them off the streets. Well, they can't bank worth a damn. So find a tight corner. (..)2012 The Avengers
(..) All right, listen up. Until we can close that portal, our priority is containment. Barton, I want you on that roof. Eyes on everything. Call out patterns and strays. Stark, you got the perimeter. Anything gets more than three blocks out, you turn it back or you turn it to ash. (..)2012 The Avengers