scallion (noun) [ˈskæ.lɪ.ən], [ˈskæ.ljn̩]
1
(now chiefly US, Ireland) A spring onion, Allium fistulosum.
2
(now chiefly US, Ireland) Any of various similar members of the genus Allium.
3
Any onion that lacks a fully developed bulb.
4
(US, Scotland) A leek.