noun, masculine/oˈɾeɡano/plural: oréganos
orégano is masculine in Spanish.
oregano, pot marjoram (Origanum vulgare)
Related: no todo el monte es orégano, orégano cubano, orégano francés, orégano mexicano
From Latin orīganum, from Ancient Greek ὅρῑ́γανον (hórī́ganon), possibly from ὄρος (óros, “mountain, hill”) + γάνος (gános, “brightness, sheen”).