The Collaborative International Dictionary
Synpelmous
Synpelmous \Syn*pel"mous\, a. [Pref. syn- + ? the sole of the foot.] (Zo["o]l.) Having the two main flexor tendons of the toes blended together.
Wiktionary
synpelmous
a. (context zoology English) Having the two main flexor tendons of the toes blended together.