
1) American brand 2) Car brand 3) Century for travelers 4) Century producer 5) General Motors brand 6) LaCrosse carmaker 7) Lacrosse maker 8) LeSabre maker, once 9) Lucerne or LeSabre 10) Regal automaker 11) Regal maker 12) Regal or Riviera 13) Regal producer 14) Riviera 15) Riviera, once 16) Skyhawk maker
Found on
https://www.crosswordclues.com/clue/buick

Buick, formally the Buick Motor Division k, is an American automobile division of the American manufacturer General Motors (GM). For much of its existence in the North American market, Buick has been marketed as a premium automobile brand, selling entry-level luxury vehicles positioned above its mainstream GM stablemate Chevrolet, and below the fl...
Found on
http://en.wikipedia.org/wiki/Buick

Buick is British and American slang for to vomit.
Found on
http://www.probertencyclopaedia.com/browse/ZBA.HTM

Vehicle manufacturer [US]
Found on
https://www.encyclo.co.uk/local/20785
No exact match found.