grada

step (of a staircase); stands, terraces (of a sports stadium)

Inherited from Old Spanish grada (“a step of a staircase”), derived from Old Spanish grado (“a staircase, a rank”) via a change in gender (compare Late Latin puncta, from punctus), inherited from Latin gradus (“a step, pace; a step of a staircase; a rank”), derived from Proto-Indo-European *gʰredʰ- (“to walk, go”).

a sieve used to shred and flatten soil already ploughed; the bars of a window in a convent

Etymology tree Proto-Indo-European *kreh₂- Proto-Indo-European *-tis Latin cratis Spanish grada Inherited from Latin cratis. Compare Portuguese grade, Italian grata. First attested ca. 1490 in Alonso Fernández de Palencia's Universal vocabulario en latín y romance.