English
interlay
From inter- + lay.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *legʰ- ‘to lie’
…
Proto-Germanic *lagjaną ‘to lay’
Proto-West Germanic *laggjan ‘to lay’
Old English leċġan ‘to lay’
Middle English leyen ‘to lay’
English lay
Today it means
verb To insert layers of a different material between.
Language periods are conventional ranges, not dates for this word.
Etymograph / interlay