فسو

6 تفاسى ذ , said of a man, He protruded his posteriors: (M, TA:) and تَفَاسَتْ, said of the [beetle called] خُنْفَسَاآء, It protruded its podex for the purpose of emitting a noiseless wind: (S, TA:) but As says that it is with hemz. (TA. See 6 in art. فسأ.)