Trangram

from The Collaborative International Dictionary of English v.0.48

Trangram \Tran"gram\, n. [OE. trangrain a strange thing,
   trangame a toy. See {Tangram}.]
   Something intricately contrived; a contrived; a puzzle. [Cant
   & Obs.] --Arbuthnot.
   [1913 Webster]