Spial vs Sial - What's the difference?
spial | sial |
(obsolete) Espionage.
(obsolete) A spy.
*1590 , Edmund Spenser, The Faerie Queene , II.i:
*:And priuie spials plast in all his way, / To weete what course he takes, and how he fares [...].
(geology) The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses.