Meaning of “lay sth out” - Learner’s Dictionary

lay sth out

phrasal verb with lay us uk /leɪ/ verb past tense and past participle laid

to arrange something on a surface:

He'd laid his tools out all over the kitchen floor.

to explain something clearly, usually in writing:

I've just laid out some proposals.

(Definition of “lay sth out” from the Cambridge Learner’s Dictionary © Cambridge University Press)