Letters that make four-ply
o, f, l, p, r, u, y are letters that make 'four-ply'
o, f, l, p, r, u, y are letters that make 'four-ply'
1 possible definitions for 'four-ply'
Under this definition, four-ply is an adjective and has the following properties:
thick is similar to four-ply.
"four-ply yarns"