'Tubule' definitions:

Definition of 'tubule'

(from WordNet)
noun
A small tube

Definition of 'Tubule'

From: GCIDE
  • Tubule \Tu"bule\, n. [F. tubule, or L. tubulus, dim. of tubus a tube, a pipe.]
  • 1. A small pipe or fistular body; a little tube. [1913 Webster]
  • 2. (Anat.) A minute tube lined with glandular epithelium; as, the uriniferous tubules of the kidney. [1913 Webster]