reja

reja is feminine in Spanish.

grate, grating, grille; bars (especially of a prison cell)

“tras las rejas” — behind bars

Borrowed from Italian regge (“church doors”), from Late Latin (porta) rēgia (literally “kingly door”).

reja is feminine in Spanish.

plowshare (or ploughshare) (soil-cutting bar of a plough)

Inherited from Vulgar Latin *regla, from Latin rēgula (“bar, stick; rule, model”). Doublet of regla. Cognate with English rail.