descepar

An agricultural term meaning to uproot a cepa — the stump or rootstock of a vine or tree — or, more broadly, to clear land of old stumps and roots. Figuratively it can mean to extirpate or wipe something out completely. In nautical use it also means to remove the stock from an anchor.

• Descepan las viñas viejas para replantar la parcela. — They uproot the old vine stumps to replant the plot.
• Hubo que descepar el terreno antes de construir. — The land had to be cleared of stumps before building.
• El nuevo régimen buscó descepar cualquier resto de la oposición. — The new regime sought to wipe out any remaining opposition.

The everyday farming sense (clearing stumps) is fairly narrow — for a general 'uproot' in casual speech, arrancar de raíz is what most speakers would actually say.