"10 a. In a state of tranquil enjoyment and content; free from pain and trouble; at ease. (Usually, but not always, in reference to physical conditions or circumstances.)
b. Expressing or characterized by comfort; easy and tranquil; undisturbed; also colloq. of persons, suggestive of complacency, placidly self-satisfied."
"5. A place, region, or state to which one properly belongs, in which one's affections centre, or where one finds refuge, rest, or satisfaction."
-Oxford English Dictionary