Synonyms for Scallion (same or very similar meaning)
WordNet sense 1 (plant having a large slender white bulb and flat overlapping dark green leaves; used in cooking; believed derived from the wild Allium ampeloprasum):
leek, Allium porrum
WordNet sense 2 (young onion before the bulb has enlarged):
green onion
From the ODE community, based on WordNet
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