DuckCorp Dico

Found 2 definitions

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   凸 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, でこ /dˈe̞ko̞/
   1. (noun (common) (futsuumeishi))
   お凸・1
            Note: word usually written using kana alonebrow, forehead
   2.
            Note: word usually written using kana alonebump
   
                   
                 

2.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   凸 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, とつ /tˈo̞tsɯᵝ/
   (adjectival nouns or quasi-adjectives (keiyodoshi))
    (nouns which may take the genitive case particle `no')
   convex