2 sentences for 拇指 (mǔ​zhǐ)

1. 他竖起大拇指表示赞许。

   tā shù​qǐ dà mǔ​zhǐ biǎo​shì zàn​xǔ.

   He gave a thumbs-up to show his approval.

   Source: Dong Chinese Dictionary

2. 这双鞋太紧，挤得脚拇指疼。

   zhè shuāng xié tài jǐn, jǐ de jiǎo mǔ​zhǐ téng.

   These shoes are too tight; they make my big toes hurt.

   Source: Dong Chinese Dictionary