in ‧ lay /ˈɪnleɪ/ BrE AmE noun
1 . [uncountable and countable] a material which has been set into the surface of furniture, floors etc for decoration, or the pattern made by this:
a cedarwood casket with gold inlay
2 . [countable] a substance used by a ↑ dentist to fill a hole in a decayed tooth