Otarion refers to the body part cut off when a sword strikes the high priest's slave.

The attested use identifies the body part severed when the high priest's slave is struck with a sword, in the parallel scenes of John 18:10 and Mark 14:47.

1. Body part severed in a sword strike · dominant

   In John 18:10 and Mark 14:47, the accusative singular neuter form occurs in the clause describing a sword strike on the high priest's slave. In John 18:10 the APB renders that the attacker “cut off his right ear,” while Mark 14:47 renders that he “cut off his ear.”

   John 18:10Mark 14:47

In the Anselm Project Bible: Across both verses, the APB presents the term in the report that the slave's ear was cut off, specifying “right ear” in John 18:10. The verse is read as a whole.