Vitola n.
The shape and size designation of a cigar - robusto, corona, Churchill, etc.
A vitola is defined by ring gauge and length together, and each named vitola - robusto, corona, Churchill, Lonsdale, panetela - has standard dimensions. The same vitola behaves differently depending on the blend, so a Cohiba robusto and a Romeo y Julieta robusto smoke quite differently despite sharing a shape.