The term 'strop' is related to sharpening tools. The crossword solutions for this term are 'SHARPEN' (7 letters), 'STRAP' (5 letters), and 'HONE' (4 letters). SHARPEN is the act of making something sharper, usually by grinding or honing it. A STRAP is a thin strip of material used to bind, fasten, or hold things together. HONE is the process of refining an edge on a blade or other tool by grinding or abrading it. All three of these terms are related to the act of sharpening a tool, which is what a strop is used for.