DuckCorp Dico

Found one definition

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   投 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, とう /tˈo̞ɯᵝ/
   1. (noun (common) (futsuumeishi))
    [baseball term] pitching ability
   2. (suffix)
    (counter)
   counter for pitches