开怀

to one's heart's content / without restraint

to open / to start / to turn on / to boil / to write out (a prescription, check, invoice etc) / to operate (a vehicle) / carat (gold) / abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2] / abbr. for 開本|开本[kai1 ben3], book format

surname Huai

bosom / heart / mind / to think of / to harbor in one's mind / to conceive (a child)