trachelos names the neck, whether embraced, burdened with a yoke or millstone, or laid down for another's life.

The term denotes the bodily neck across varied clauses: a yoke is placed on it, people fall upon it in embrace, a millstone is put around it, and it is said to be laid down for another's life.

1. The bodily neck in varied actions and expressions · dominant

   The supplied form is accusative singular masculine in every occurrence, appearing as the location on which a yoke is placed in Acts 15:10, as the object reached in embraces in Luke 15:20 and Acts 20:37, and as the location around which a millstone is placed in Matthew 18:6, Mark 9:42, and Luke 17:2. In Romans 16:4, the same form occurs in the statement that people “laid down their own necks” for Paul's life; the APB presents this as an act undertaken for him.

   Acts 15:10Acts 20:37Luke 15:20Luke 17:2Mark 9:42Matthew 18:6Romans 16:4

In the Anselm Project Bible: The APB explicitly uses “neck” in the yoke, millstone, and Romans clauses, while its account of embraces in Acts 20:37 does not repeat that body-part wording. Its varying phrasing reflects the whole clauses rather than establishing separate meanings.