the GNU version of the Collaborative International Dictionary of English
n. A setting down of the foot; a footstep; the sound of a footstep.
The Century Dictionary and Cyclopedia
n. A footstep; the tread of the foot.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the sound of a step of someone walking
Word Usage
"a painful and solitary business through "that solitary land of the individual experience, in which no fellow footfall is ever heard", as it says in the first epigraph in The Aunt's"