Roof

Part of speech: noun

Pronunciation: /ɹuːf/

Definitions

1. The upper covering of a building that protects it from weather and external elements
2. The structure that tops a building, providing shelter and protection from rain, snow, and sun, as well as contributing to the overall aesthetic of the architecture
3. A surface that encloses the uppermost part of a building, serving to shield the interior from natural elements like precipitation and temperature variations while supporting the overall design

Etymology: Before "roof" meant the covering over a house, Old English "hrōf" also meant "heaven, sky," so the word once pointed upward to the vault of the heavens as much as to the thatch or tiles over a room. That broader sense is preserved in the older Old English usage, and the word's roots reach back to a shared Germanic term for a covering. The ancestry goes deeper still. The Proto-Indo-European root "*krāwə-" meant "to cover, heap," and the same root gave rise to words for ceilings and attics across Slavic languages, such as Russian "строп" (strop), meaning attic or loft, and Serbo-Croatian "strop," meaning ceiling. English "roof" and these Slavic cousins are therefore related, though they have diverged in meaning over thousands of years. In Middle English the noun "rof" gave rise to the verb "rofen" (later "roven"), meaning to put a roof on a building. English therefore built the verb from the noun, so that to roof a house literally meant to make it into a roof-bearing structure.

Synonyms: top, cover, ceiling

Antonyms: floor, ground