mas.ter denotes a hiding place or concealment in the clause about people hiding their faces.

The attested use refers to concealment in the clause describing people hiding their faces in Isaiah 53:3.

1. Concealment in hiding one's face · dominant

   In Isaiah 53:3, the construct singular noun occurs in the phrase about people hiding their faces; the APB renders the clause “as one from whom men hide their faces.”

   Isaiah 53:3

In the Anselm Project Bible: In Isaiah 53:3, the APB presents the clause as “as one from whom men hide their faces.” Its exact English correspondence to the noun cannot be isolated with certainty.