chastaignier

== Middle French == === Etymology === From Old French chastaignier. === Noun === chastaignier m (plural chastaigniers) chestnut (tree) ==== Descendants ==== French: châtaignier == Old French == === Etymology === chastaigne +‎ -ier. === Noun === chastaignier oblique singular, m (oblique plural chastaigniers, nominative singular chastaigniers, nominative plural chastaignier) chestnut (tree) ==== Descendants ==== Middle French: chastaignierFrench: châtaignier