onion plant onionpeel • onion red · · · Info · Definitions · Synonyms · Characters · · onion plant · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb. Synonyms: onion, onion plant, Allium cepa. · · Noun Definition 1 Synonyms · · · onion · · Synonym 1 allium cepa · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 t latin small letter t U+0074