(n) :
either of two people (or, less commonly, animals) who shared the same uterus at the same time; one who was born at the same birth as a sibling; either of two similar or closely related objects, entities etc
(adj) :
forming a pair of twins; forming a matched pair
(n) :
either of two people (or, less commonly, animals) who shared the same uterus at the same time; one who was born at the same birth as a sibling; either of two similar or closely related objects, entities etc
(adj) :
forming a pair of twins; forming a matched pair