'Single-foot' definitions:

Definition of 'single-foot'

noun

A rapid gait of a horse in which each foot strikes the ground separately [syn: rack, single-foot]

verb

Go at a rack; "the horses single-footed" [syn: single- foot, rack]

From: GCIDE

Single-foot \Sin"gle-foot`\, n. An irregular gait of a horse; -- called also {single-footed pace}. See Single, v. i. [1913 Webster]
Single-foot is an irregular pace, rather rare, distinguished by the posterior extremities moving in the order of a fast walk, and the anterior extremities in that of a slow trot. --Stillman (The Horse in Motion.) [1913 Webster]

From: GCIDE

Single-foot \Sin"gle-foot`\, v. i. To proceed by means of the single-foot, as a horse or other quadruped. -- {Sin"gle-foot`er}, n. [Webster 1913 Suppl.]