libra.
scales, balance; level; Roman pound, 12 unciae/ounces; (3/4 pound avoirdupois);
Meaning & usage
libra, Roman pound, a Roman unit of mass, equivalent to about 327 g
scales, a tool used to balance two weights to measure amounts
level, a tool used to check surfaces for horizontal and vertical alignment
pound, any of various units of mass derived from or roughly equivalent to the Roman libra
pound, any of various currencies derived from the use of pound as a weight in silver
Where this word comes from
Of uncertain origin. The word's original form was something like Proto-Italic *līðrā, *leiðrā (“pound”), surviving also in Ancient Greek λίτρα (lítra), whence English litre. Weiss derives the term from Proto-Indo-European *leyH- (“to pour”) suffixed with the instrumental/resultative suffix *-dʰrom, under the assumption that the term originally meant "pouring (of metal)" before evolving to mean a unit of weight. In this case, then cognate with Proto-Slavic *lìti (“to pour”), Proto-Celtic *liyeti (“to flow”), Ancient Greek λείβω (leíbō, “to pour”), Lithuanian li̇́eti (“to let flow”).
second-person singular present active imperative of lībrō
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.