Initialism of Rolls-Royce.

A diminutive of the female given name Pamela. / (UK, historical, slang) Nickname for Henry John Temple, 3rd Viscount Palmerston.

(chiefly computing) Designed to be easy for an untrained user to use, with intuitive ordering of steps, consistent and logical placement of controls, etc.

Any online lexicon resembling Wiktionary. / Any of the free dictionaries produced by a collaborative project run by the Wikimedia Foundation.