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]

WordNet (r) 3.0 (2006):

tiro
    n 1: someone new to a field or activity [syn: novice,
         beginner, tyro, tiro, initiate]

U.S. Gazetteer Places (2000):

Tiro, OH -- U.S. village in Ohio
   Population (2000):    281
   Housing Units (2000): 109
   Land area (2000):     0.411789 sq. miles (1.066528 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.411789 sq. miles (1.066528 sq. km)
   FIPS code:            76932
   Located within:       Ohio (OH), FIPS 39
   Location:             40.906753 N, 82.772054 W
   ZIP Codes (1990):     44887
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Tiro, OH
    Tiro