投

tóu · tau4 (Jyutping)

1. to throw (sth in a specific direction: ball, javelin, grenade etc)
2. to cast (a ballot)
3. to cast (a glance, a shadow etc)
4. to put in (money for investment, a coin to operate a slot machine)
5. to send (a letter, a manuscript etc)
6. to throw oneself into (a river, a well etc to commit suicide)
7. to go to; to seek refuge; to place oneself into the hands of
8. (coll.) to rinse (clothes) in water