having a space or cavity inside; not solid; empty

a hollow sphere.

having a depression or concavity

a hollow surface.

sunken, as the cheeks or eyes.

(of sound) not resonant; dull, muffled, or deep

a hollow voice.

without real or significant worth; meaningless

a hollow victory.

insincere or false

hollow compliments.

hungry; having an empty feeling

I feel absolutely hollow, so let's eat.

an empty space within anything; a hole, depression, or cavity.

a valley

They took the sheep to graze in the hollow.

Foundry . a concavity connecting two surfaces otherwise intersecting at an obtuse angle.

to make hollow (often fol. by out )

to hollow out a log.

to form by making something hollow (often fol. by out )

to hollow a place in the sand; boats hollowed out of logs.

to become hollow.

in a hollow manner

The politician's accusations rang hollow.

beat all hollow

to surpass or outdo completely

His performance beat the others all hollow. Also, beat hollow.

noun

barrenness , blankness , inanity , vacancy , vacuity , vacuousness , desolation , vacuum , void