#1 hollow n. a cavity or space in something; "hunger had caused the hollows in their cheeks". wn
#2 hollow a. 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". wn
#3 hollow n. [holler] a small valley between mountains; "he built himself a cabin in a hollow high up in the Appalachians". wn
#4 hollow s. as if echoing in a hollow space; "the hollow sound of footsteps in the empty ballroom". wn
#5 hollow n. [hole] a depression hollowed out of solid matter. wn
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