Standard Lemma guide

trass

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /tɹɑːs/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /tɹæs/
  • rhymes with -ɑːs
  • rhymes with -æs

1

noun

Meaning 1

A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Dutch tras or German Trass, probably from Italian terrazzo (“terrace”). See terrace.