hermanastro

hermanastro, -a
masculine or feminine noun
1half brother, (f) (half sister) (medio hermano)stepbrother, (f) stepsister (hijo del padrastro/de la madrastra)

hermanastro [er-mah-nahs'-tro-trah]
noun
1Step-brother, step-sister. (m & f)

hermanastroa hermanastra
sustantivo:masculino_y_femenino
(con padre o madre común) half brother/sister; (sin vínculo sanguíneo) stepbrother/stepsister;

Word of the Day: evidentemente

evidently, plainly, clearly, obviously