celeriac

noun

1. grown for its thickened edible aromatic root

   noun.plant

   Synonyms apium graveolens rapaceum celery root knob celery root celery turnip-rooted celery

   Source: WordNet 3.0

2. thickened edible aromatic root of a variety of celery plant

   noun.food

   Synonyms celery root

   Source: WordNet 3.0

3. Turnip-rooted celery, a from of celery with a large globular root, which is used for food.

   noun

   Source: webster1913