pi.phiy.yah denotes plural tooth-like cutting features, pictured on a threshing sled and beside a two-edged sword.

The attested plural use concerns sharp, tooth-like cutting features: Isaiah 41:15 places them on a new threshing sled that crushes mountains, while Psalm 149:6 places the form in a verse about praise and a two-edged sword.

1. Tooth-like cutting features · dominant

   Both occurrences use the plural noun. In Isaiah 41:15 the APB renders a “sharp new threshing sled, master of teeth” that treads and crushes; in Psalm 149:6 the form occurs in the clause that the APB renders with “a two-edged sword in their hand,” though the translation does not isolate the term's contribution.

   Isaiah 41:15Psalm 149:6

In the Anselm Project Bible: In Isaiah 41:15 the APB explicitly uses “teeth” for the threshing sled. In Psalm 149:6 it presents a “two-edged sword,” and does not identify a separate English rendering for the term.