paci en · NOUN Pronunciation (US) audio/ˈpæ.si/ Meanings (abbreviation, alt-of, childish, clipping, informal) Clipping of pacifier. alt of pacifier Jeffrey enjoyed scoping out his hands and holding his paci with the top his hand before pushing it back into his mouth. 2003, Helen Baldwin, The Jeffrey Journey: Forms SpellingFeaturesLabelsSource pacis Number=Plur lexicographic Deriveds paci gag wikidata: Q152596