Plural of gree; steps or steps of a staircase, or Scottish/archaic usage for superiority or victory.
From Scottish and archaic English 'gree,' possibly from Old Norse 'greiðr' (ready) or from the concept of steps/gradations. The 'victory' sense may come from climbing to the highest step.
Scottish English preserved this word long after it died in standard English—'gree' for victory or superiority appears in medieval Scottish poetry, showing how regional dialects preserve linguistic fossils!
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