Definitions for "Imbricated"
Keywords:  shingle, overlap, bracts, lapped, lying
Bent and hollowed like a roof or gutter tile.
Lying over each other in regular order, so as to "break joints," like tiles or shingles on a roof, the scales on the leaf buds of plants and the cups of some acorns, or the scales of fishes; overlapping each other at the margins, as leaves in æstivation.
In decorative art: Having scales lapping one over the other, or a representation of such scales; as, an imbricated surface; an imbricated pattern.
Keywords:  incurved
Incurved
Keywords:  nest, outline, interior, external, thus
Imbricated shapes are those that nest. Thus, letter "O" is composed of two imbricated shapes: external outline and interior outline.