Sentence:  My love to Sheelah is more firmly fixt, / Than strongest weeds that grow these stones betwixt: / My <WSD>spud</WSD> these nettles from the stone can part; / No knife so keen to weed thee from my heart. 
Meaning of the word marked with <WSD> tags:  A tool, similar to a spade, used for digging out weeds etc. (From 1660s.)