greaseman

listen to the pronunciation of greaseman
İngilizce - İngilizce
Grease man - someone who squeezes into small spaces/does tasks requiring agility. You would have to "grease" the person to slide into a tight space, etc
a grease-man is an acrobat, that is, someone who can squeeze in small spaces, crawl through ventilation ducts where others can't, climb otherwise unclimbable stuff, etc