"board made of two or more thin layers of wood bonded together and arranged so that the grain of one runs at right angles to that of the next," 1907, from ply (n.) + wood (n.).
plutonium
plutonomic
pluvial
ply
Plymouth
plywood
pn-
pneuma
pneumatic
pneumatics
pneumato-
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}