Halusis denotes an instrument of restraint used to bind people and carried by an angel.

The attested use denotes a restraining object: people are bound with it, it can fall away or be torn apart, and it can be worn in custody or carried by an angel. The same use appears in scenes of confinement and restraint as well as in Revelation 20:1.

1. Instrument used for binding and restraint · dominant

   In Acts 12:6, the dative plural form occurs in the clause where Peter is bound between two soldiers; in Acts 12:7, the nominative plural form is the object that falls from his hands. Acts 21:33 likewise places the dative plural form in an order to bind a man with two such restraints, while Acts 28:20 has the accusative singular in the statement that it is around the speaker. In Revelation 20:1, the accusative singular is held by the descending angel.

   Acts 12:6Acts 12:7Mark 5:4Acts 21:33Acts 28:20Revelation 20:1

In the Anselm Project Bible: The APB consistently presents the term as "chain" or "chains" in scenes of binding, broken restraint, custody, and the angel's equipment. These renderings confirm the clause-level setting rather than establish a separate nuance.