Cockney
A term originally applied to the inhabitants of any town, and implying their ignorance with regard to the facts of farming and agriculture. In the 17th century its application became limited to the inhabitants of London, and this is now its general sense, though it is said to apply strictly only to those born within the sound of the St Mary-le-Bow bells.
The Cockney Accent or dialect is chiefly characterized by the following peculiarities: substitution of the f or v for th (eg: brover for brother, of ah for ou (rahnd for round), and a tendency to nasalize many vowels.
Another characteristic, which is not however, confined to Cockney, is the dropping or misplacement of the letter h.
