The Collaborative International Dictionary of English v.0.48:

Tiro \Ti"ro\, n. [L.]
   Same as Tyro.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tyro \Ty"ro\, n.; pl. Tyros. [L. tiro a newlylevied soldier, a
   beginner.]
   A beginner in learning; one who is in the rudiments of any
   branch of study; a person imperfectly acquainted with a
   subject; a novice. [Written also tiro.]
   [1913 Webster]

         The management of tyros of eighteen
         Is difficult.                            --Cowper.
   [1913 Webster]

U.S. Gazetteer (1990):

Tiro, OH (village, FIPS 76932)
  Location: 40.90603 N, 82.76831 W
  Population (1990): 246 (103 housing units)
  Area: 1.1 sq km (land), 0.0 sq km (water)
  Zip code(s): 44887