di·a·per 
(dīə-pər, dīpər)
(dīə-pər, dīpər)n.
1.
a. A folded piece of absorbent material, such as paper or cloth, that is placed between a baby's legs and fastened at the waist to contain excretions.
b. A similar piece of material, worn by incontinent adults.
2.
a. A pattern composed of small, regularly repeated geometric motifs, usually diamonds or lozenges, used to decorate a surface.
b. A white cotton or linen fabric having such a pattern.
c. A piece of such fabric.
tr.v. di·a·pered, di·a·per·ing, di·a·pers
1. To put a diaper on.
2. To weave or decorate in a diaper pattern.
[Middle English, textile with a diaper pattern, from Old French diapre, variant of diaspre, from Medieval Latin diasprum, from Medieval Greek diaspros, pure white, of white interspersed with other colors (sense uncertain) : Greek dia-, dia- + Late Greek aspros, white (from aspron, silver denarius (originally *"new, unworn coin"), from earlier Late Greek aspros, rough, from Latin asper, rough, unworn (used of new coins whose relief had not yet been worn smooth)).]
diaperroofing pattern on a building in Obernai, in the Alsace region of France