/ ˈtreʒə(r); NAmE / noun , verb
■ noun
1.
[ U ] a collection of valuable things such as gold, silver and jewellery :
buried treasure
a pirate's treasure chest
2.
[ C , usually pl. ] a highly valued object :
the priceless art treasures of the Uffizi gallery
3.
[ sing. ] a person who is much loved or valued
■ verb
[ vn ] to have or keep sth that you love and that is extremely valuable to you
SYN cherish :
I treasure his friendship.
This ring is my most treasured possession.
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WORD ORIGIN
Middle English : from Old French tresor , based on Greek thēsauros storehouse, treasure.