Brachiabindo seems to be derived from two roots, brachi- and the the English word "bind". Brachi- can either refer to brachia, the plural Latin word for "arms", or brakhion, Greek for "upper arm". The ending -bindo is possibly a dog Latin version of the English word "bind". Taken together, Brachiabindo could be interpreted as "I bind the arms".
Behind the scenes
- This is likely the spell that Albus Dumbledore used in 1996 to capture the Death Eaters in the Death Chamber.