投とう機き心しんMeaningsNoun1. a speculative spiritKanji used投throw機machine心heartPitch accentとうきしんComposed of投とう機きspeculation; venture; stockjobbing; gambling (on stocks)Noun心しんheart; mind; spirit; vitality; inner strength; bottom of one's heart; core (of one's character); nature; centre; center; …Noun