overlay
To lay upon or over; cover or spread over the surface of: as, cedar overlaid with gold.
To burden or encumber; oppress.
To lie upon; hence, to smother by lying upon: for overlie.
To obscure by covering; cloud; overcast.
To span; join the opposite sides of.
In printing, to make even or graduate the impression of, on a printing-press, by means of overlays.
In printing, to use overlays.
nounIn quarrying, the overburden or detrital material which covers the rock in a quarry.
nounIn printing, a bit of paper accurately cut and pasted on the impression-surface of a printing-press with intent to increase the impression in a place where it is not strong enough.
nounIn tile-ornamenting (by the process of pressing leaves, laces, or embossed patterns upon the unbaked tiles), a part of a leaf, cutting of lace, etc., which lies over and upon another leaf, cutting, or pattern.