Synonyms for Manikin (same or very similar meaning)
WordNet sense 1 (a person who is very small but who is not otherwise deformed or abnormal):
mannikin, homunculus
WordNet sense 2 (a woman who wears clothes to display fashions):
mannequin, model, manakin, fashion model
WordNet sense 3 (a life-size dummy used to display clothes):
form
From the ODE community, based on WordNet
add/edit