lath

noun

material used to span gaps in structural framing and form a base on which to apply plaster

Wiktionary

Pronunciation: /lɑːθ/ / /læθ/

noun

Alternative form of lat (“staff; monumental pillar”).

verb

Etymology: From Middle English laththe, laþþe, earlier lathe, laþe, altered from Old English lætt (“lath”), from Proto-West Germanic *lattu, from Proto-Germanic *laþô (compare Dutch lat, German Latte) from Proto-Indo-European *(s)lat- (compare Welsh llath (“rod, wand, yard”)).

To cover or line with laths.