Alias · Guard
Half guard butterfly
Also known as Half Butterfly Guard — the canonical term used on this site.
Hybrid — half guard with butterfly hook
Half guard butterfly is the hybrid configuration name for the half-butterfly — combining the half-guard leg-trap with a single inserted butterfly hook to produce a guard variant distinct from both pure half guard and pure double-butterfly.
Etymology. “Half guard” specifies the trapped-leg element; “butterfly” specifies the inserted-hook element. The compound predominates in instructional contexts that emphasise the structural composition over the canonical “half-butterfly” form.
Mechanics. The combined trap-and-hook configuration provides the leg-control of half guard plus the elevation-leverage of the butterfly hook — sweep options expand beyond either pure variant.
Cross-reference. “Butterfly half guard” is the same hybrid under reversed-order naming. Full mechanical coverage on Half Butterfly.