to overlay or cover with plaster : coat
2
: to apply a plaster to
3
a : to cover over or conceal as if with a coat of plaster
b : to apply as a coating or incrustation
c : to smooth down with a sticky or shiny substance
4
: to fasten or apply tightly to another surface
5
: to treat with plaster of paris
6
: to affix to or place on especially conspicuously or in quantity
7
: to inflict heavy damage or loss on especially by a concentrated or unremitting attack