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):

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

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "tyro":
   abecedarian, alphabetarian, apprentice, articled clerk, baby,
   beginner, boot, catechumen, colt, dabbler, deb, debutant,
   dilettante, entrant, fledgling, freshman, greenhorn, greeny,
   ignoramus, inductee, infant, initiate, learner, neophyte, nestling,
   new boy, newcomer, nonprofessional, novice, novitiate, postulant,
   probationer, probationist, raw recruit, recruit, rookie, smatterer,
   tenderfoot, trainee



U.S. Gazetteer Places (2000):

Tyro, KS -- U.S. city in Kansas
   Population (2000):    226
   Housing Units (2000): 105
   Land area (2000):     0.528020 sq. miles (1.367566 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.528020 sq. miles (1.367566 sq. km)
   FIPS code:            71925
   Located within:       Kansas (KS), FIPS 20
   Location:             37.035742 N, 95.821679 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Tyro, KS
    Tyro