Celeriac is the correct spelling.

It is a noun and refers to a type of celery.

Celeriac is known for being an unattractive vegetable but the root of celeriac is quite tasty and is similar to celery. The leaves are woody and generally not eaten due to their unappealing taste.

The bulb of celeriac grows like a turnip half in and half out the soil.

Translation: Karfas lefti (كرفس لفتي)

It literally translates as "turnippy celery", which is very similar to the appearance of celeriac root, but, as an idiomatic expression, karfas lefti refers to celeriac root.

Creamy white.