Sol

noun2

1. •
   (rare) Or (gold), in the postmedieval practice of blazoning the tinctures of certain sovereigns' (especially British monarchs') coats as planets.

   • 8. Tierce in Mantle, first Mars, two Lions passant-guardant in pale, Sol, for Brunswick; 2d Sol, Semi of Hearts proper, a Lion rampant Jupiter, for Lunenburgh — 1735
2. •
   (no longer used) Gold.