faecal : Idioms & Phrases
faecal matter
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noun solid excretory product evacuated from the bowels
ordure; dejection; BM; stool; feces; faeces; fecal matter.
WordNet
faecal occult test
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noun a test performed at home in which you collect specimens of your stool that are tested for traces of blood; used to detect colorectal cancers
fecal occult test; stool test.