Ostiary is a 7 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 9 points.
You can make 232 anagrams from letters in ostiary (aiorsty).
1400-50; late Middle English hostiary Latin ōstiārius doorkeeper, equivalent to ōsti(um) door, entrance (see ostium) + -ārius -ary
In the decline of his popularity he permitted his door-keeper, whom he dignifies with the title of ostiary, to take a shilling!