Trespassing meaning : To commit an offence; to sin. To offend against, to wrong (someone). To go too far; to put someone to inconvenience by demand or importunity; to intrude. To enter someone else's property illegally. To pass beyond a limit or boundary; hence, to depart; to go. To decree that a person shall be arrested for trespassing if he or she returns to someone else's land. Unauthorized entry to private property