Synonyms of knurl
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bulgeBulges are lumps that stick out from a surface which is otherwise flat or smooth.
• Why won't those bulges on your hips and thighs go?
lumpA lump on or in someone's body is a small, hard swelling that has been caused by an injury or an illness.
• I've got a lump on my shoulder.
nodeA node is a point, especially in the form of lump or swelling, where one thing joins another.
• Cut the branches off cleanly through the stem just below the node.
Thesaurus for knurl from the Collins English Thesaurus