Lay low as a verb (transitive, informal):
To topple or overcome; to cause to fall; (of a person) to knock out.
"He was laid low by a vicious blow to the head."
Lay low as a verb:
"Future: 'I’m going to lie low for a while in case the police come looking for me.'"
"Present: 'I'm lying low because the police are looking for me.'"
"Past: 'I lay low yesterday when the police came looking.'"
"Past perfect: 'I have lain low because the police have been looking for me.'"
Lie low as a verb (intransitive):
To conceal oneself; to remain hidden.
"I'll lie low here until you get back, good luck!"