hollow
hol-low
adjective
Having an empty space or cavity inside; not solid.
"The old tree trunk was hollow inside."
noun
A small valley or depression in the ground.
"They found shelter in a hollow."
adjective
Lacking real value, sincerity, or substance; empty.
"His apology sounded hollow and insincere."
verb
To make a hole or empty space within something.
"The artisan hollowed out the wooden bowl."
Thesaurus
Synonyms: hollow out, core out, hole, dig, excavate, fistulous, cannular, vasiform, tubelike, fistular, deep-set, cavernous
Antonyms: solid