"twin" in the noun sense
either of two offspring born at the same time from the same pregnancy
2. Gemini, Twin
astrology) a person who is born while the sun is in Gemini
3. Twin, Twin Falls
a waterfall in the Snake River in southern Idaho
4. counterpart, similitude, twin
a duplicate copy
"twin" in the verb sense
1. twin, duplicate, parallel
duplicate or match
"The polished surface twinned his face and chest in reverse"
2. match, mate, couple, pair, twin
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"
grow as twins
give birth to twins
"twin" in the adjective sense
1. duplicate, matching, twin, twinned
being two identical
Source: WordNet® (An amazing lexical database of English)
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