'Twinned' definitions:

Definition of 'twinned'

From: WordNet
adjective
Being two identical [syn: duplicate, matching, twin(a), twinned]

Definition of 'Twinned'

From: GCIDE
  • Twin \Twin\, v. i. [imp. & p. p. Twinned; p. pr. & vb. n. Twinning.]
  • 1. To bring forth twins. --Tusser. [1913 Webster]
  • 2. To be born at the same birth. --Shak. [1913 Webster]

Definition of 'Twinned'

From: GCIDE
  • Twinned \Twinned\, a. (Crystallog.) Composed of parts united according to a law of twinning. See Twin, n., 4. [1913 Webster]