2, pronunciation: English [__nj_n]American [__nj_n]

3, interpretation: n. onion; onion head.

4, onion (scientific name: AlliumcepaL.) is a perennial herb of the lily family, genus Allium. Bulb thick, subglobose; papery to thin leathery, inner skin fat, fleshy, leaf blade cylindrical, hollow, thickest below the middle, tapering upward, shorter than the scape, the scape is stout, up to 1 m high, umbels globose, with many and dense flowers; pollen white; perianth segments with a green midvein, rectangular-orbicular ovate, filaments of equal length, the ovary subglobose, ventral suture line at the base of the curtain with the depressed nectar pits; flowering and fruiting from May to July.