梶木, 舵木, 旗魚, 羽魚, 鱏, 鮙: a marlin

Short for 日本国 (Nihon-koku): Japan (a country and archipelago in East Asia) / a surname

a male given name

書杖: A pole with a split in the end, used in earlier times to pass documents to superiors. / 書状: A letter, an epistle; an informal request written on a piece of origami.