賭
かけ · kake · JLPT N1 · noun
a gamble
🎲 賭 = 者 (person) + 貝 (shell money): a person staking valuables on a bet
Shells (貝) were once used as money, so 賭 pictures... no. Shells (貝) were ancient money, and 者 marks a person, so 賭 is someone putting valuables on the line. The verb stem 賭け (kake) names the bet itself.