peep·hole 
(pēphōl′)
(pēphōl′)n.
A small hole or crevice through which one may look. Also called eyehole.
- working class
- working-class
- working control
- working day
- working dog
- working fluid
- working girl
- workingman
- working memory
- working papers
- working substance
- workingwoman
- work in progress
- work into
- work like a charm
- workload
- workman
- workmanlike
- workmanship
- workmen's compensation
- work of art
- work off
- work (one's) fingers to the bone
- work one's fingers to the bone
- work out