peek 
/ˈpi:k/ verb
peeks; peeked; peek·ing /ˈpi:k/ verb [no obj] 1 a : to look at someone or something secretly especially from a hidden place
▪ A little girl peeked around the corner of the chair at him. ▪ She peeked [=peered] through a hole in the fence. ▪ Close your eyes, and no peeking!
b : to look at something briefly
▪ She peeked ahead to the next chapter to see what happened next. ▪ He allowed some of his friends to peek at his next painting. 2 : to show slightly : to be slightly visible — usually + out ▪ Her slip peeked out from beneath her skirt. [=a small part of her slip could be seen beneath her skirt]
▪ A little girl peeked around the corner of the chair at him. ▪ She peeked [=peered] through a hole in the fence. ▪ Close your eyes, and no peeking!
b : to look at something briefly
▪ She peeked ahead to the next chapter to see what happened next. ▪ He allowed some of his friends to peek at his next painting.
— peek noun, plural peeks [count]
▪ Take another peek at the cake in the oven to see if it's done. ▪ They tried to sneak a peek at the actors getting ready behind the curtain. ▪ We saw a sneak peek [=a brief showing] of the movie that will be released next month.
▪ Take another peek at the cake in the oven to see if it's done. ▪ They tried to sneak a peek at the actors getting ready behind the curtain. ▪ We saw a sneak peek [=a brief showing] of the movie that will be released next month.
