Definitions for ostiaˈɒs ti ə
Random House Webster's College Dictionary
Os•ti•aˈɒs ti ə(n.)
a town in central Italy, SW of Rome: ruins from 4th century b .c .; site of ancient port of Rome.
Category: Geography (places)
an ancient town in Italy at the mouth of the Tiber; the harbour of ancient Rome
The Nuttall Encyclopedia
the seaport of ancient Rome, at the mouth of the Tiber, now in ruins.