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