pl.
From Longman Dictionary of Contemporary EnglishRelated topics: Grammarpl.pl. (also pl British English)SLGthe written abbreviation of pluralRelated topics: RoadsPl.Pl. (also Pl British English)TTRthe written abbreviation of Place, used in addresses 3 Palmerston Pl., EdinburghFrom Longman Business DictionaryPLPLCOMPUTING written abbreviation for PROGRAMMING LANGUAGE