土 means "soil," "earth," or "ground." It is a fundamental noun used in contexts related to agriculture, geography, and nature. It can also appear as part of compound words like 土地 (land).
春天到了,土里的种子开始发芽了。
chūntiān dào le, tǔ lǐ de zhǒngzi kāishǐ fāyá le.
Spring has arrived, and the seeds in the soil have started to sprout.
这里的土特别肥沃,适合种菜。
zhèlǐ de tǔ tèbié féiwò, shìhé zhòng cài.
The soil here is particularly fertile, suitable for growing vegetables.
雨后空气里有一股泥土的味道。
yǔ hòu kōngqì lǐ yǒu yì gǔ nítǔ de wèidào.
After the rain, there is a smell of earth in the air.