Scallion (5)
'scallion' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shallot that I've seen before include "found in the allotment" , "Small onion-like bulb used for seasoning" , "Scallion" , "Onion-like plant with clusters of bulbs" , "Type of 12" .)
(Other definitions for onion that I've seen before include "Eye-watering vegetable" , "veggie" , "Tear-inducing edible bulb" , "Pungent edible bulb of the lily family" , "Tear-jerking bulb" .)