Definitions from Wiktionary (CEI)

▸ noun:  Initialism of Central European Initiative.
▸ noun:  Initialism of Cycle Engineers' Institute, one of three screw thread standards contributing to the Whitworth threads standards set
▸ noun:  (BDSM) Initialism of cum-eating instructions: written or recorded instructions directing a submissive to consume semen.
▸ noun:  (uncommon) Initialism of child exploitation images.




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