PLL Views 18 meanings found PLL most often points to the teen drama series Pretty Little Liars or to a Phase‑Locked Loop circuit used in electronics, and occasionally to collections of private law libraries. Medical ProLymphocytic Leukaemia Miscellaneous Permute Last Layer Phase Lock Loop Permute left layer Pretty Little Permute lower layer Governmental Prescribed Load List Phased Locked Loop Academic & Science Private Law Libraries Plasma Lock Load Phase Locked Loop Pre linked library Regional Ponta Pelada, AM, Brazil Computing Computer Associates Clipper Pre-Linked Library Internet Pretty Little Liars Business Pall Corporation Provision for Loan Loss Paralegal Legal Litigator