A variety of a language (specifically, often a spoken variety) that is characteristic of a particular area, community or group, often with relatively minor differences in vocabulary, style, spelling and pronunciation. (noun)
A dialect of a language perceived as substandard and wrong. (noun)
Examples of word dialect
The second part of my reason for not writing these poems in dialect is the weightier.
OF what shall be said herein of dialect, let it be understood the term dialect referred to is of that general breadth of meaning given it to-day, namely, any speech or vernacular outside of the prescribed form of good English in its present state.
Assyrian tongue differed only in dialect from the Hebrew, but in the
Note that the a dialect is a distinctive usage of vocabulary, grammar, and pronunciation.
Whether you call it a different language or a dialect is academic, all that is at issue here is whether a story told from a British point of view should be read/can be understood by Americans if presented as originally written.