"hollows" in the noun sense
1. hollow
a cavity or space in something
"hunger had caused the hollows in their cheeks"
2. hollow, holler
a small valley between mountains
"he built himself a cabin in a hollow high up in the Appalachians"
3. hole, hollow
a depression hollowed out of solid matter
"hollows" in the verb sense
1. excavate, dig, hollow
remove the inner part or the core of
"the mining company wants to excavate the hillside"
2. hollow, hollow out, core out
remove the interior of
"hollow out a tree trunk"
Source: WordNet® (An amazing lexical database of English)
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