planch UK /plɑːnt͡ʃ/US /plænt͡ʃ/noun 1verb 1forms 3 noun1 •(no longer used) A plank.They went ouer planches, where they were cut off from the way. — 1583 verb1 •(no longer used) To make or cover with planks or boards.To that vineyard is a planched gate. — 1603 formsplanched · planching · planches
