armhooks

Noun

armhook (plural armhooks)

1. A hook-like projection on the arm of a cephalopod, such as on the armhook squid (Gonatus fabricii).
   • In Ancistrotheutis the attachment ring persists, and the hook sac surrounding the tentacle hook is closed except during function contrary to the condition in the armhooks where the hook always projects from the sac.1977, Videnskabelige meddelelser fra Dansk naturhistorisk forening
2. (folk dancing) A movement in which two people hook arms at the elbow and turn around each other.
   • When the partners meet they form armhook with each other, turn around once, let go, and continue the march till they again meet, when they march up into straight flank formation and halt at the end of the stanza.1908, Jakob Bolin, Swedish Song-plays
3. A hook for maneuvering something using the arm.
   • By the arrangement of these armhooks, it is possible for nurses to open doors while both hands are occupied.1919, Architecture and Building - Volume 51