1. Manner of speaking, language, speech; especially a manner of speech peculiar to, or characteristic of, a particular person or class; phraseology, idiom.
2. One of the subordinate forms or varieties of a language arising from local peculiarities of vocabulary, pronunciation, and idiom.
3. Any form of speech considered a deviation from real or imaginary standard speech.

In relation to modern languages, usually specifically, a variety of speech differing from the standard or literary language; a provincial method of speech; such as, in speakers of dialect.

Also in a wider sense applied to a particular language in its relation to the family of languages to which it belongs.

in-sondo, in sunda, n-sondo (Sunday)
my-sumbuluko, mu-simbuluko (Monday)
bwa bili, u bwa bili, bu ti bili (Tuesday)
bwa tatu, u bwa tatu, bu ti tatu (Wednesday)
bwa ne, buti banda (Thursday)
bwa sanu, u bwa sanu, bu ti musanu (Friday)
mu-jibelo, bu-tabula kamwi (Saturday)

Bantu-Botatwe dialect is thought to be the "most archaic of the Bantu languages".

Mwkazimaziba, Mukazimalambwa (January)
Mulume, Mulumi (February)
Muyoba, Muyobo (March)
Mukubwe-kaangala, Cisangule (April)
Kaanda-kanini, Inkomboola-bulezi (May)
Ganda-pati, Ivwivivi-pati (June)
Kunkumuna-masamu, Kazyala-konze (July)
Itwi, Katwe-kacela (August)
Ivwivwi, Katu (September)
Ka-vwmbi-kanini, Kazyumbi-kanini (October)
Ivumbi-pati, Izyumbi pati (November)
Nalupale, Simwenje (December)