RhymeZone: southern drawl definitions

Definitions of Southern drawl:

noun: (phonetics) The diphthongisation or triphthongisation of the vowels /æ/, /ɛ/ and /ɪ/ into [æj(ə)], [ɛj(ə)] and [ɪj(ə)], occurring in English spoken in the Southern United States.

(Definitions from Wiktionary)