'Pantile' definitions:

Definition of 'pantile'

(from WordNet)
noun
A roofing tile with a S-shape; laid so that curves overlap

Definition of 'Pantile'

From: GCIDE
  • Pantile \Pan"tile`\, n. [5th pan + tile.] (Arch.) A roofing tile, of peculiar form, having a transverse section resembling an elongated S laid on its side (?). [1913 Webster]