identical in WordNet English dictionary

1. (of twins) derived from a single egg or ovum
   "identical twins are monovular"
   identical  monovular 
   
2. coinciding exactly when superimposed
   "identical triangles"
   identical  superposable 
   
3. having properties with uniform values along all axes
   identical 
   
4. exactly alike; incapable of being perceived as different
   "rows of identical houses"; "cars identical except for their license plates"; "they wore indistinguishable hats"
   identical  indistinguishable 
   
5. being the exact same one; not any other:
   "this is the identical room we stayed in before"; "the themes of his stories are one and the same"; "saw the selfsame quotation in two newspapers"; "on this very spot"; "the very thing he said yesterday"; "the very man I want to see"
   identical  selfsame  very