Wiktionary
shanks' mare
alt. (context US idiomatic English) One's own legs used for walking; to "travel by shanks' mare" or "ride on shanks' mare" is to walk to your destination. n. (context US idiomatic English) One's own legs used for walking; to "travel by shanks' mare" or "ride on shanks' mare" is to walk to your destination.
WordNet
shanks' mare
n. you own legs; "I traveled on shank's mare" [syn: shank's mare, shank's pony, shanks' pony]