| Siamese twin n. Either of a pair of identical twins born with their bodies joined at some point, a result of the incomplete division of the ovum from which the twins developed. [After Chang and Eng Bunker (1811-1874), joined Chinese twins born in Siam (Thailand).] |
Siamese twin Si·a·mese twin (sī'ə-mēz', -mēs')
n.
Either of a pair conjoined twins. No longer in technical use.