Trespassing is entering private land you have no right to be on. No trespassing, caught trespassing, trespassing on the line.
In England and Wales it is usually a civil wrong rather than a crime, which is why signs threatening prosecution are mostly bluff — though trespassing on a railway is a criminal offence. Scotland has a right of responsible access instead.
1nountrespassingEntering private land you have no right to be on.
“The sign on the gate said No Trespassing, so we didn't go into the field.”
trespassing is an offence.
Also accepted in games: trespass
Old French
trespas — passage; offense against the law
Middle English
trespas
English
trespass
English, today
trespassing
trespass Borrowed into Middle English trespas, from Old French trespas (“passage; offense against the law”), from trespasser.
Etymology from Wiktionary, CC BY-SA