He had only just left the Countess Bonina, with whom he had danced the first half of the waltz, and, scanning his kingdom—that is to say, a few couples who had started dancing—he caught sight of Kitty, entering, and flew up to her with that peculiar, easy amble which is confined to directors of balls.
Swaying rhythmically with the ambling paces of his good little cob, drinking in the warm yet fresh scent of the snow and the air, as he rode through his forest over the crumbling, wasted snow, still left in parts, and covered with dissolving tracks, he rejoiced over every tree, with the moss reviving on its bark and the buds swelling on its shoots.
There are no more uses of "amble" in the book.
Show samples from other sources
The elderly couple likes to amble along the beach at sunset.
A toothless old man came ambling up to them,
J.K. Rowling -- Harry Potter and the Sorcerer’s Stone