2 sentences for 大号 (dà​hào — defecate)

1. 我肚子不舒服，要去上个大号。

   wǒ dù​zi bù shū​fu, yào qù shàng gè dà​hào.

   My stomach feels upset; I need to go use the toilet for a number two.

   Source: Dong Chinese Dictionary

2. 他在亲人的灵堂前放声大号，哭声十分凄惨。

   tā zài qīn​rén de líng​táng qián fàng​shēng dà​hào, kū​shēng shí​fēn qī​cǎn.

   He wailed loudly in front of his relative's mourning hall, and his crying was truly heartrending.

   Source: Dong Chinese Dictionary