Open English Wordnet
Nouns
(n)hollowa cavity or space in something“hunger had caused the hollows in their cheeks” (n)hollow, hollera small valley between mountains“he built himself a cabin in a hollow high up in the Appalachians” (n)hole, hollowa depression hollowed out of solid matter Verbs
(v)excavate, dig, hollowremove the inner part or the core of“the mining company wants to excavate the hillside” Adjectives
(a)hollownot solid; having a space or gap or cavity“a hollow wall”,
“a hollow tree”,
“hollow cheeks”,
“his face became gaunter and more hollow with each year” (s)hollowas if echoing in a hollow space“the hollow sound of footsteps in the empty ballroom” (s)empty, hollow, vacuousdevoid of significance or force“empty promises”,
“a hollow victory”,
“vacuous comments” (s)hollowlacking in substance or character“a hollow person”