Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From the genitive of walker, variant of waulker + clay. In some forms from walker + clay.
Definition of walker's clay in US English:
walker's clay
nounˌwɔːkəz ˈkleɪ
rare
Fuller's earth.
Origin
Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From the genitive of walker, variant of waulker + clay. In some forms from walker + clay.