Bellyache is a pain inside your abdomen, especially in your stomach.
例句
They may complain of diarrhea or bellyache.他們可能會主訴腹瀉或腹痛。
VERB
無病呻吟；反復大聲發牢騷
If you say that someone is bellyaching, you mean they complain loudly and frequently about something and you think this is unreasonable or unjustified.