noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   a felt, metal, or membrane sheet material used between courses of steep-slope roofing to improve the weather and water-shedding characteristics of the primary roof covering during times of wind-driven precipitation. countable, uncountable

Etymology

From interlay + -ment.

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