(1):

(n.) Any place of retreat and security.

(2):

(n.) An institution for the protection or relief of some class of destitute, unfortunate, or afflicted persons; as, an asylum for the aged, for the blind, or for the insane; a lunatic asylum; an orphan asylum.

(3):

(n.) A sanctuary or place of refuge and protection, where criminals and debtors found shelter, and from which they could not be forcibly taken without sacrilege.