1 to dig

2 to excavate

3 to scoop out

1 to excavate

2 to dig

3 to unearth

1 machine

2 machinery

3 mechanical

4 (old) cunning

5 scheming

1 apparatus

2 instrument

3 equipment

4 weapon

1 excavator

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

1 to dig for thoughts (idiom); to search everything for an answer

2 to rack one's brains

1 to cut one's flesh to cover a sore (idiom); faced with a current crisis, to make it worse by a temporary expedient

1 to exhume a body for public flogging (idiom)

1 to scrape around for money

2 hard pressed for cash

3 cf 羅雀掘鼠|罗雀掘鼠 to net birds and dig for rats (idiom)