A small piece of JavaScript code stored as a URL within a bookmark.(noun)
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Use "bookmarklet" in a sentence
"It's a novel thought (albeit clumsy and inflexible), but branding this as a Chrome-specific bookmarklet is a little silly."
"Also the co. mments bookmarklet is 1-click, unlike CoComment's bookmarklet which requires a click, then a wait, then a frantic click on a dialog box that disappears after two seconds. posted by Jonathan at"
"Our bookmarklet is not only safe, but indispensable, so please answer “Yes”."