definition of
twin

[1] #1 twin n. either of two offspring born at the same time from the same pregnancy. wn

[2] #2 twin v. [duplicate, parallel] duplicate or match; "The polished surface twinned his face and chest in reverse". wn

[3] #3 twin n. [Gemini, Twin] (astrology) a person who is born while the sun is in Gemini. wn

[4] #4 twin v. [match, mate, couple, pair] bring two objects, ideas, or people together; "This fact is coupled to the other one"; "Matchmaker, can you match my daughter with a nice young man?"; "The student was paired with a partner for collaboration on the project". wn

[5] #5 twin n. [Twin, Twin Falls] a waterfall in the Snake River in southern Idaho. wn