labrum
/ˈleɪ.bɹəm/noun
labrum is a noun meaning “The uppermost of the mouthparts (trophi) of a typical insect, such as a cockroach. Typically resembles an upper lip and forms part of the roof of the…” (English Wiktionary, September 2026). It is spelled L-A-B-R-U-M and has 2 syllables, and it appears about once in every 5 million words in written English (wordfreq, 2021 data). The plural of labrum is labrums or labra.
What does labrum mean?
noun
- 1
The uppermost of the mouthparts (trophi) of a typical insect, such as a cockroach. Typically resembles an upper lip and forms part of the roof of the mouth in such insects.
- 2
Any of several lip-like projections.
- 3
A large basin of warm water, with an overhanging lip, in a Roman bath.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce labrum?
- US /ˈleɪ.bɹəm/
Labrum has 2 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of labrum
- labrums plural
- labra plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is labrum?
Labrum appears about once in every 5 million words in written English, the 65,913th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Labrum in Spanish, French, German and Portuguese
In the sense the uppermost of the mouthparts of insects:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does labrum come from?
From Latin labrum (“lip”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).