As nouns the difference between rigol and rigoll
is that rigol is (obsolete) a circle while rigoll is an old musical instrument consisting of several sticks bound together, but separated by beads, and played with a stick with a ball at its end.
rigoll
English
Noun
(
en noun)
An old musical instrument consisting of several sticks bound together, but separated by beads, and played with a stick with a ball at its end.
References
* John Weeks Moore, Complete Encyclopædia of Music .