Skipped the first three. Well done.
a: a regional variety of language distinguished by features of vocabulary, grammar, and pronunciation from other regional varieties and constituting together with them a single language
b: one of two or more cognate (see COGNATE entry 1 sense 3a) languages
c: a variety of a language used by the members of a group
a: a regional variety of language distinguished by features of vocabulary, grammar, and pronunciation from other regional varieties and constituting together with them a single language
b: one of two or more cognate (see COGNATE entry 1 sense 3a) languages
c: a variety of a language used by the members of a group