what is the meaning of thus word?

dig
you can dig the ground of the dirty or you can dig the truth
我要挖掘这个事情的真相
我买了一台挖掘机，想在我家挖一个游泳池

挖掘机在外面挖了一天了，好吵！
每个人都要试着挖掘自己的才能。

Physically means digging, mining
Abstractly means to explore and find ou deeper, more profound meaning of something.

新聞報導的其中一項責任是挖掘真相

The word 挖掘 (wā jué) is a Verb that means "to excavate," "to dig," or "to unearth." It can be used in various contexts, such as archaeological digs, and mining operations, or figuratively to describe the process of exploring or uncovering information or ideas.

Here are some example sentences:
1, 我们需要挖掘更多的煤炭来满足能源需求。
(Wǒmen xūyào wājué gèng duō de méitàn lái mǎnzú néngyuán xūqiú.)
We need to excavate more coal to meet our energy demands.

2, 这个考古团队正在挖掘一座古城。
(Zhège kǎogǔ tuánduì zhèngzài wājué yī zuò gǔchéng.)
This archaeology team is excavating an ancient city.

3, 我们需要挖掘市场的潜力，以便拓展我们的业务。
(Wǒmen xūyào wājué shìchǎng de qiánlì, yǐbiàn tuòzhǎn wǒmen de yèwù.)
We need to explore the market potential to expand our business.

4, 他们正在挖掘一个新的创意来吸引更多的顾客。
(Tāmen zhèngzài wājué yī gè xīn de chuàngyì lái xīyǐn gèng duō de gùkè.)
They are digging up a new idea to attract more customers.