a polish of quick-drying lacquer, either clear or colored, used to paint the fingernails or toenails.
Origin of nail polish
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for nail polish
nail varnish or US nail enamel
a quick-drying lacquer applied to colour the nails or make them shiny or esp both
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012