Merriam-Webster's Collegiate® Dictionary, 11th Edition
PLASTER
I. noun see: floor Date: before 12th century a medicated or protective dressing that consists of a film (as of cloth or plastic) spread with a usually medicated substance , a pasty composition (as of lime, water, and sand) that hardens on drying and is used for coating walls, ceilings, and partitions, plastery adjective
II. verb (plastered; plastering)
Date: 14th century
transitive verb to overlay or cover with plaster ; coat , to apply a plaster to,
3. to cover over or conceal as if with a coat of plaster, to apply as a coating or incrustation, to smooth down with a sticky or shiny substance , to fasten or apply tightly to another surface, to treat with plaster of paris, to affix to or place on especially conspicuously or in quantity, to inflict heavy damage or loss on especially by a concentrated or unremitting attack, intransitive verb to apply plaster, plasterer noun