كِيسٌ

[A purse;] a well known receptacle; (TA;) a thing made of pieces of rag sewed together; (Msb;) for money, (S, K, TA,) and for pearls and sapphires: (TA:) [so called] because it comprises them: (K, TA:) [a remark that seems to indicate a signification of كَاسَ or some other word from the same root which I do not find elsewhere pointed out: but the more probable derivation is from the Persian كِيسَهْ:] that which is tied up, of leather, and of pieces of rag, is not called thus, but is called خَرِيطَةٌ: (Msb:) plural [of pauc.] أَكْيَاسٌ (S, Msb, K) and كِيَسَةٌ. (K.)

Hence, (TA,) (tropical:) The membrane that encloses a child in the womb; synonym مَشِيمَةٌ. (K, TA.)

[Hence also, (assumed tropical:) The scrotum.]