Definition of 投機 (とうき)
とうき
                        投機
とうき
touki
Common word
noun
•
        
speculation, venture, stockjobbing, gambling (on stocks)
Related Kanji
| 投 | throw, discard, abandon, launch into, join, invest in, hurl, give up, sell at a loss | 
| 機 | loom, mechanism, machine, airplane, opportunity, potency, efficacy, occasion |