From Longman Dictionary of Contemporary Englishlay something ↔ in phrasal verb especially British English formalKEEP/STOREto get and store a supply of something to use in the future He likes to lay in a few special drinks for the festive season. → lay→ See Verb table
Examples from the Corpus
lay in• He lay down in bed again slowly and unhappily.• It lay out in front of Little Round Top, across a scrub-covered and rock-strewn valley.• He laid booby traps in his house, and built lookout posts for anyone who came on to his property.• These houses are laid out in terraces on the hillside with porticoes and colonnaded peristyles.• Then she lay down in the water and let the scented heat wash over her.• The bear fell over and lay still in the water.• His use of location shooting, natural lighting, and lay actors stood in total contrast to the older expressionist cinema.• He came and helped me lay it all in which was very nice. 