1. Producing two offspring at a time
   "Twins are a result of a twinning pregnancy";
   - biparous

1. Duplicate or match
   "The polished surface twinned his face and chest in reverse";
   - duplicate, parallel
    
2. Bring two objects, ideas, or people together
   "The designer twinned modern and traditional elements";
   - match, mate, couple, pair
    
3. Grow as twins
   "twin crystals"
    
4. Give birth to twins
   "The cat twinned, surprising her owners"

See also: multiparous

Type of: agree, bear, birth, check, correspond, deliver, fit, gibe, give birth, grow, have, jibe, join, marry, marry up, match, square, tally

Encyclopedia: Twinning