noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A fixed underlayer of tile or fibre cement on a roof, to support the mortar above.

Verb

1. 1
   To apply such an underlayer to. transitive

Etymology

From under- + cloak.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.