mas.veh is the covering Moses places over his face, removes when entering to speak, and replaces afterward.

The term denotes the covering associated with Moses' face: it is put on after he speaks, removed when he enters to speak in the LORD's presence, and replaced afterward.

1. Moses' face covering · dominant

   All three occurrences show the same singular masculine absolute noun in the sequence of Moses placing, removing, and replacing a covering over his face. In Exodus 34:33 the APB renders that action as placing it over his face; Exodus 34:34 describes its removal before Moses speaks in the LORD's presence, and Exodus 34:35 its replacement after the people see his shining face.

   Exodus 34:33Exodus 34:34Exodus 34:35

In the Anselm Project Bible: The APB consistently uses “veil” in Exodus 34:33, Exodus 34:34, and Exodus 34:35, describing it as placed over, removed from, and replaced over Moses' face. The verse is read as a whole, but the repeated clause context clearly presents the same object.