31er

31 +‎ -er, referencing German Betäubungsmittelgesetz BtMG §31, an article that allows courts to reduce or sometimes drop the sentence when the accused has helped to convict others or prevented crimes from taking place by his or her sharing information with the authorities.

• IPA^(key): /ˌaɪ̯nʊnˈdʁaɪ̯sɪɡɐ/
• Rhymes: -aɪ̯sɪɡɐ

31er m (strong, genitive 31ers, plural 31er)

1. (Germany, slang) snitch, backstabber

• 31er on the German Wikipedia.Wikipedia ^de
• “31er” in Uni Leipzig: Wortschatz-Lexikon