| Noun | 1. | hollow - a cavity or space in something; "hunger had caused the hollows in their cheeks" | |
| 2. | hollow - a small valley between mountains; "he built himself a cabin in a hollow high up in the Appalachians"vale, valley - a long depression in the surface of the land that usually contains a river | |
| 3. | hollow - a depression hollowed out of solid matterburrow, tunnel - a hole in the ground made by an animal for shelter kettle hole, kettle - (geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits cavity, pit - a sizeable hole (usually in the ground); "they dug a pit to bury the body" chuckhole, pothole - a pit or hole produced by wear or weathering (especially in a road surface) wormhole - hole made by a burrowing worm | |
| Verb | 1. | hollow - remove the inner part or the core of; "the mining company wants to excavate the hillsite"remove, take away, withdraw, take - remove something concrete, as by lifting, pushing, taking off, etc. or remove something abstract; "remove a threat"; "remove a wrapper"; "Remove the dirty dishes from the table"; "take the gun from your pocket"; "This machine withdraws heat from the environment" drive - excavate horizontally; "drive a tunnel" trench, ditch - cut a trench in, as for drainage; "ditch the land to drain it"; "trench the fields" | |
| 2. | hollow - remove the interior of; "hollow out a tree trunk"empty - make void or empty of contents; "Empty the box"; "The alarm emptied the building" suck in, draw in - draw in as if by suction; "suck in your cheeks and stomach" scoop out - hollow out with a scoop; "scoop out a melon" cave, undermine - hollow out as if making a cave or opening; "The river was caving the banks" dig, dig out - create by digging; "dig a hole"; "dig out a channel" excavate - form by hollowing; "Carnegie had a lake excavated for Princeton University's rowing team"; "excavate a cavity" core - remove the core or center from; "core an apple" | |
| Adj. | 1. | hollow - not 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"solid - entirely of one substance with no holes inside; "solid silver"; "a solid block of wood" | |
| 2. | hollow - deliberately deceptive; "hollow (or false) promises"; "false pretenses"insincere - lacking sincerity; "a charming but thoroughly insincere woman"; "their praise was extravagant and insincere" | |
| 3. | hollow - as if echoing in a hollow space; "the hollow sound of footsteps in the empty ballroom"reverberant, ringing - having a tendency to reverberate or be repeatedly reflected; "a reverberant room"; "the reverberant booms of cannon" | |
| 4. | hollow - devoid of significance or point; "empty promises"; "a hollow victory"; "vacuous comments"meaningless, nonmeaningful - having no meaning or direction or purpose; "a meaningless endeavor"; "a meaningless life"; "a verbose but meaningless explanation" | |