noun

1. flying; leaping; flight; leap
2. zero; naught; oh (when reading a number aloud; e.g. 20036 = 二万とびとび三十六)
3. flying fish (esp. the Japanese flying fish, Cypselurus agoo)
4. mahjong running out of points (zero or fewer); game ending due to a player running out of points
5. Go usually kana jump (usu. トビ)