definition of
hollow

[1] #1 hollow n. a cavity or space in something; "hunger had caused the hollows in their cheeks". wn

[2] #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] #3 hollow n. [holler] a small valley between mountains; "he built himself a cabin in a hollow high up in the Appalachians". wn

[4] #4 hollow s. as if echoing in a hollow space; "the hollow sound of footsteps in the empty ballroom". wn

[5] #5 hollow n. [hole] a depression hollowed out of solid matter. wn