Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "intruder" in a sentence
"It uses image-processing software installed on its built-in micro-computer to determine whether the intruder is a threat."
"So language was crafted to protect residents against prosecution or a civil suit if they blast away at an intruder, as long as they think the intruder is about to commit a forcible felony."
"A watchdog simply barks to alert if an intruder is detected and can run in various sizes and breeds."