Wiktionary
alt. (context intransitive English) To conceal oneself; to remain hidden. vb. (context intransitive English) To conceal oneself; to remain hidden.
WordNet
v. keep a low profile, try to be inconspicuous
to try to avoid detection especially by police; "After we knock off that liquor store we'll have to lay low for a while"
Usage examples of "lie low".
Go north and east, get far away from this part of the country and lie low for a while.
He stayed there all night, spending the time partly in a light slumber, from which his hunger kept waking him up with a start, and partly in worrying and sketching vague hopes, which all led to the same conclusion, that he must lie low for the present and, by exercising patience and the utmost consideration, help the family to bear the inconvenience he was bound to cause them in his present condition.