Sentence:  Sunning himself on the board steps, I saw for the first time Mr. Farquhar Fenelon Cooke....A silver snaffle on a heavy leather watch guard which connected the pockets of his corduroy waistcoat, together with a huge gold <WSD>stirrup</WSD> in his Ascot tie, sufficiently proclaimed his tastes. 
Meaning of the word marked with <WSD> tags:  Any piece shaped like the stirrup of a saddle, used as a support, clamp, etc.