stepping stone

to use / to employ / to make use of, to apply / to spend

go across, go over / migrate

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

river, stream

飛ぶ: to fly, to skip over / 跳ぶ: to jump

賭場: gambling den

鳥羽: A surname.