cerrar

to close, to shut; to shut down, to close down; to turn off, to shut off (to rotate a tap or valve so as to interrupt the outflow of liquid or gas); to turn off (a light or electrical device); to enclose

“No olvides cerrar la puerta.” — Don't forget to close the door.

Inherited from Old Spanish, from Vulgar Latin serrāre (“close, shut”), from Late Latin serāre (“fasten, bolt”), from Latin sera (“bolt, cross-bar”). Compare English serry/serried.