The Collaborative International Dictionary
Dialectal
Dialectal \Di`a*lec"tal\, a. Relating to a dialect; dialectical; as, a dialectical variant.
Douglas Harper's Etymology Dictionary
Wiktionary
dialectal
a. 1 Of or relating to a dialect. 2 Not linguistically standard.
WordNet
dialectal
adj. belonging to or characteristic of a dialect; "dialectal variation"
Usage examples of "dialectal".
Written in the south-east, it passed to the West Midlands and there received a western dialectal dress.
There are dialectal irregularities, particularly between tribes, but taking the Scandinavian peninsula as a whole, those irregularities are modest.
Cruz’s dialectal use of language, I believe he means we’re being kept away from the crew for some unknown reason rather than being held for criminal matters.