verbs
recover through digging
"Schliemann excavated Troy"; "excavate gold"
find by digging in the ground
"I dug up an old box in the garden"
form by hollowing
"Carnegie had a lake excavated for Princeton University's rowing team"; "excavate a cavity"
is a type of (narrower)
remove the interior of
"hollow out a tree trunk"
remove the inner part or the core of
"the mining company wants to excavate the hillside"