street stock

Short definition from Wiktionary

Adjective

1. 1
   Pertaining to street stock car racing.

Noun

1. 1
   Ellipsis of street stock car, a street-legal retail-sold car close to factory stock configuration, lightly modified for safety and racing, no longer being street-legal used for stock car racing.
2. 2
   Ellipsis of street stock car racing.