Lurker has 2 different meanings across 1 category:
Noun
Noun
1
someone waiting in concealment
"The security guard spotted a lone lurker crouched behind the dumpster, watching the building's entrance."
2
One who lurks.
"The security guard spotted a suspicious figure hiding behind the dumpster, confirming that someone had been lurking in the alley all night."
Broader Terms (hypernyms)