Noun

1. Fibrin (formerly considered as one of the "animal humours").
   • 1621, Robert Burton, The Anatomy of Melancholy, Book I, New York 2001, p. 147:

     The radical or innate is daily supplied by nourishment, which some call cambium, and make those secondary humours of ros and gluten to maintain it [...].

2. The major protein in cereal grains, especially wheat; responsible for the elasticity in dough and the structure in baked bread.