v. Obs.0 [perh. = sowne, var. of SOUND v.1] intr. (See quot.)

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1607.  Cowell, Interpreter, Sowne, is a verb neuter, properly belonging to the Exchequer, as a word of their art, signifiing so much, as to be leuiable, or possible to be gathered or collected. For example, estreats that sowne not, are such as the Shyreeue by his industry cannot get, and estreats that sowne, are such as be can gather. [Hence in Phillips, Harris, etc.]

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