Definition of clays:
(n) :
A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics.
(n) :
An earth material with ductile qualities.
(n) :
(tennis) A tennis court surface made of crushed stone, brick, shale, or other unbound mineral aggregate.
(n) :
(geology) A particle less than 3.9 microns in diameter, following the Wentworth scale.
(n) :
(biblical) The material of the human body.
(n) :
A clay pipe for smoking tobacco.