Definition of shelters:
(n) :
(countable) Somewhere one can find protection.
(n) :
A place where a person or animal may find protection from the elements (especially rain, storms, or cold) sometimes as a place to sleep (such as a cave).
(n) :
A refuge, sanctuary, or (by metonymy) institution that provides temporary housing or a place to sleep for those in need or in danger.
(n) :
(uncountable) That which provides protection or cover.
(v) :
(transitive) To provide cover from damage or harassment; to shield; to protect.
(n) :
(uncountable, abstract) The state of being protected or shielded.