to throw (sth in a specific direction: ball, javelin, grenade etc) / to cast (a ballot) / to cast (a glance, a shadow etc) / to put in (money for investment, a coin to operate a slot machine) / to send (a letter, a manuscript etc) / to throw oneself into (a river, a well etc to commit suicide) / to go to / to seek refuge / to place oneself into the hands of / (coll.) to rinse (clothes) in water
bottom / base / background / foundation / copy (of a manuscript or receipt etc) kept as a record / (suffix) end of a year or month / (math.) radix / base (abbr. for 底數|底数[di3shu4])
cǎo