In making a pit, soil is disturbed (4)
I believe the answer is:
silo
'in making a pit' is the definition.
I can't tell whether this definition defines the answer.
'soil is disturbed' is the wordplay.
'is disturbed' indicates an anagram (the order of letters is disturbed).
'soil' anagrammed gives 'SILO'.
Can you help me to learn more?
(Other definitions for silo that I've seen before include "Storage space for fodder" , "Farm grain storer" , "Where rockets are launched from" , "Farm tower" , "Underground chamber for a missile" .)