What is the meaning of Mongrel?

Anything of mixed kind.

1. A dog with a lineage of two or more breeds.

   A dog with a lineage of two or more breeds.

   A person of mixed race.

   A thuggish, obnoxious, or contemptible person; a pitiable person.

   An erect penis; an erection.

   Of mixed breed, nature, or origin; of or like a mongrel.

   Source: wiktionary.org