hollow out

To hollow out is to scoop or otherwise remove the insides of something. To build a cave, you'll have to hollow out the earth in the side of a hill.

During war, soldiers sometimes hollow out trenches they can crouch in for protection from gunfire. Animals, including woodpeckers and several types of insects, also hollow out protective areas for themselves, often from dead wood in trees. And some kinds of drums are also made by hollowing out a piece of wood. Hollow has an Old English root, holh, "hole or hollow place."

Definitions of hollow out
  1. verb
    remove the interior of
    synonyms: core out, hollow
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    gouge, rout
    make a groove in
    scallop, scollop
    form scallops in
    make holes in
    draw in, suck in
    draw in as if by suction
    scoop out
    hollow out with a scoop
    cavern, cavern out
    hollow out as if making a cavern
    cave, undermine
    hollow out as if making a cave or opening
    dig, dig out
    create by digging
    form by hollowing
    remove the core or center from
    excavate the earth beneath
    take (root crops) out of the ground
    dig a trench or trenches
    make a hole with a wooden hand tool
    type of:
    make void or empty of contents
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