The Collaborative International Dictionary of English v.0.48:

Glycin \Gly"cin\, n. [Gr. glyky`s sweet.] (Physiol. Chem.)
   Same as Glycocoll.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Glycocoll \Gly"co*coll\, n. [Gr. glyky`s sweet + ko`lla glue.]
   (Physiol. Chem.)
   A crystalline, nitrogenous substance, with a sweet taste,
   formed from hippuric acid by boiling with hydrochloric acid,
   and present in bile united with cholic acid. It is also
   formed from gelatin by decomposition with acids. Chemically,
   it is amido-acetic acid. Called also glycin, and
   glycocin.
   [1913 Webster]