屑

Top-left 尸 — pictograph of a reclining body, the indexing radical. In radical-position 尸 broadens beyond 'corpse' to 'flat thing leaning over' (屋 house, 层 layer, 居 dwelling). On 屑 it suggests something fallen below, small flakes shed off a larger body — shavings, crumbs, bits scraped from a surface.

Inside 肖 supplies sound and meaning. Sound: xiāo → xiè with tone shift. Meaning: 肖 contains 小 'small' on top, with older sense 'small fragment, diminutive likeness.' Combined with 尸 'flat covering,' you get 'small fragments fallen below a surface' — exactly what crumbs and shavings are. Also feeds 削 (to pare) and 消 (to dissipate).