SPLAYFOOT
splayfooted, splayfoot
(adjective) having feet that turn outward
flatfoot, splayfoot, pes planus
(noun) a foot afflicted with a fallen arch; abnormally flattened and spread out
Source: WordNet® 3.1
Etymology
Noun
splayfoot (countable and uncountable, plural splayfeet)
(uncountable) A deformity in which the feet are abnormally flat and turned outwards.
(countable) A foot exhibiting that deformity.
Source: Wiktionary
Splay"foot`, n.; pl. Splayfeet (.
Definition: A foot that is abnormally flattened and spread out; flat foot.
Splay"foot`, Splay"foot`ed a.
Definition: Having a splayfoot or splayfeet.
Source: Webster’s Unabridged Dictionary 1913 Edition