|a man who furtively observes women undressing; voyeur|
|[C19: after the tailor who, according to legend, peeped at Lady Godiva when she rode naked through Coventry]|
peeping Tom peep·ing Tom (pē'pĭng)
A person who gets pleasure, especially sexual pleasure, from secretly watching others; a voyeur.
One who derives pleasure, usually sexual, from secretly spying on others. (See voyeurism.)
Note: The original “peeping Tom” was a legendary resident of the town where Lady Godiva rode naked through the streets. According to the story, Tom defied official orders by looking out his window as she went by and was struck blind.