Of course it is. It's a little wrong
to say a tomato is a VEGETABLE.
The Big Bang Theory Season 2, Episode 20
And not a VEGETABLE in sight.
The Big Bang Theory Season 8, Episode 18
...and refers to a lantern
hand-carved from a root VEGETABLE...
The Big Bang Theory Season 3, Episode 15
That the next time she sees Rio,
he'll be a VEGETABLE?
Money Heist Season 3, Episode 4
...Thursday is no longer
cruciferous VEGETABLE night.
The Big Bang Theory Season 4, Episode 2