A male deer of a small species, or historically a unit of hunting/land rights.
From Old English 'ra' (roe deer) + 'bucca' (male deer or buck). Compound describing the male of the small European roe deer species.
Medieval hunting laws were obsessively detailed—roe deer were 'beasts of the second order,' and only nobles could hunt them, so 'roebuck' wasn't just an animal but a marker of social class and property rights.
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