Past Tense for Lie and Lay: Is it "lay" or "laid"?
"Lay" is the past tense for "lie" and means "reclined", as in "Our chickens lay in the dirt all afternoon."
"Laid" is the past tense of "lay" and means "put something down", as in "We laid to rest the day-old chicks that died during transit."
Lie (= recline), lying (= reclining), lay (= reclined), (have) lain (= have reclined)
Lay (= place [something]), laying (= placing [something]), laid (= placed [something]), (have) laid (= have placed [something])