Alias · Leg Entanglements
Hook-to-thread conversion
Also known as Butterfly Ashi Garami — the canonical term used on this site.
Training background: describes the mechanical conversion
Descriptive — hook-to-thread leg conversion
Hook-to-thread conversion is the descriptive name for the butterfly-ashi entry — flagging the mechanical conversion from butterfly hook to ashi-garami leg thread.
Etymology. “Hook” references the butterfly hook starting configuration; “thread” references the ashi-garami leg-thread destination; “conversion” attaches the transition category. The compound predominates in coaching vocabulary that emphasises the mechanical-conversion process.
Mechanics. The conversion repositions the attacker’s foot from the inserted-hook position to the threaded-between-legs ashi position — the transition commits the inside space before the opponent recovers.
Cross-reference. “Butterfly ashi entry” and “Butterfly to ashi transition” are alternate names. Full mechanical coverage on Butterfly Ashi.