noun, masculine/ˈtiθo/plural: tizos
charred piece of wood
“vino mi amo con un terrible dolor de costado en las sienes, y estando en el hogar sólo un tizo me quiso aporrear: que para qué gastaba tanta leña, que se quemaría la casa.” — My master came in with a terrible headache on the side. As I was at the hearth, he hit me with a piece of charred wood, scolding me asking why I was using up so much firewood, because the house could get burnt.
Inherited from Latin tītiō via the nominative form. Alternatively a Back-formation from tizón. Cf. the variation in Italian between tizzo and tizzone. According to Coromines and Pascual, first attested in Francisco de Quevedo (1580-1645).