فسو

الفَاسِيَةُ ذ (S, M, K) and ↓ الفَاسِيَاآءُ (M, K) and ↓ الفَسَّاآءَةُ (TA) The [ beetle called ] خُنْفَسَاآء; (S, M, K;) which emits a noiseless wind, and makes the party to stink by its foul odour: (M:) the pl. of the first is الفَوَاسِى. (TA.) Hence the prov., أَفْحَشُ مِنْ فَاسِيَةٍ i. e. [ More foul than ] a خنفساء. (S, M.)