cantering

from WordNet (r) 3.0 (2006)

cantering
    adj 1: riding at a gait between a trot and a gallop; "the
           cantering soldiers"

from The Collaborative International Dictionary of English v.0.48

Canter \Can"ter\ (k[a^]n"t[~e]r), v. i. [imp. & p. p. {Cantered}
   (k[a^]n"t[~e]rd); p. pr. & vb. n. {Cantering}.]
   To move in a canter.
   [1913 Webster]