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Webster 1913 Edition

Noun.

[

Small

+ F.

ache

smallage. See

parsley.]

(Bot.)

A biennial umbelliferous plant (

Apium graveolens

) native of the seacoats of Europe and Asia. When deprived of its acrid and even poisonous properties by cultivation, it becomes

celery

Noun.

A plant of the genus Apium, water parsley.

smallage ‎(uncountable)

Celery in its wild (uncultivated) form.
- 1922, Eleanour Sinclair Rohde, A Garden of Herbs: Being a Practical Handbook to the Making of an Old English Herb Garden, page 123:
  Chop the smallage exceeding small and put it in a good half hour before you are to take your posset from the fire: You are to season your Gruel with a little Salt, at the due time; and you may put in a little Nutmeg, and Mace to it.