What part of speech does cloistered play in this sentence The animals were the hold?

Let's break down the sentence and figure out the part of speech for "cloistered":

* The sentence: "The animals were cloistered in the hold."

* "Cloistered" is the verb in this sentence. It describes the action the animals were doing.

* "In the hold" is a prepositional phrase acting as an adverb, modifying the verb "cloistered."

Therefore, "cloistered" is a verb in this sentence.