/skal"yeuhn/ , n.
1. any onion that does not form a large bulb; green onion.
2. a shallot.
3. a leek.
[ 1300-50; late ME scalyon ( e ) escaloigne escalonia, var. of L Ascalonia ( caepa ) onion of Ascalon, a seaport of Palestine; r. ME scalone, scaloun scaloun ]