Sentence:  "<WSD>Clew</WSD>" is Saxon; "garnet" (from granato, a fruit) is Italian,—that is, the garnet- or pomegranate-shaped block fastened to the <WSD>clew</WSD> or corner of the courses, and hence the rope running through the block. 
Meaning of the word marked with <WSD> tags:  The lower corner(s) of a sail to which a sheet is attached for trimming the sail (adjusting its position relative to the wind); the metal loop or cringle in the corner of the sail, to which the sheet is attached.  The trailing corner relative to the wind direction.