Usage of the character 掘

to dig

cǎijué

采掘

[採掘]

to excavate
to extract (ore)

luójué

罗掘

[羅掘]

to scrape together money (abbr. for 羅雀掘鼠／罗雀掘鼠 (luoqué-juéshu))

juéchū

掘出

[掘出]

to exhume
to unearth
to dig out

wājué

挖掘

[挖掘]

to excavate; (lit and fig.) to unearth; to dig into

fājué

发掘

[發掘]

to excavate
to explore
(fig.) to unearth
to tap into

kāijué

开掘

[開掘]

to dig; to excavate
(fig.) to explore (archival materials) and unearth findings

Juékè

掘客

[掘客]

Digg (social news website)

wājuéjī

挖掘机

[挖掘機]

excavator

juétǔjī

掘土机

[掘土機]

excavator

juémùbiānshī

掘墓鞭尸

[掘墓鞭屍]

to exhume a body for public flogging (idiom)

luóquè-juéshǔ

罗雀掘鼠

[羅雀掘鼠]

lit. to net sparrows and dig out rats (idiom)
fig. to try every possible means of obtaining food (in times of starvation)

shùjùwājué

数据挖掘

[數據挖掘]

data mining

juémùgōngrén

掘墓工人

[掘墓工人]

grave digger

zìjuéfénmù

自掘坟墓

[自掘墳墓]

to dig one's own grave

wājuéjīxiè

挖掘机械

[挖掘機械]

excavator
bulldozer

línkějuéjǐng

临渴掘井

[臨渴掘井]

lit. not to dig a well until one is thirsty
to be unprepared and seek help at the last minute (idiom)

chīshuǐbùwàngjuéjǐngrén

吃水不忘掘井人

[吃水不忘掘井人]

Drinking the water of a well, one should never forget who dug it. (idiom)