nfpl. sediment, dregs, solid matter which settles at the bottom of a liquid; slop; sweepings

nf. scum, foul film or slime that forms atop a liquid; sediment, dregs

(n.) = faeces [feces, -USA] ; stool.
Ex: The section on hygiene gives particular attention to methods caregivers can use to deal with blood, saliva, tears, bites, faeces, urine, vomit, and the ritual by which children become blood brothers or sisters.
Ex: The stool of a constipated person is typically hard because it contains less water than normal.
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* análisis de heces = stool analysis.
* muestra de heces = stool sample.
* sangre oculta en las heces = faecal occult blood.