Words

Akkadian
pitūtu - (a headdress) (CAD P 448, AHw. 871)
No etymology can be suggested.
Akkadian
piṭātu - archery corps (CAD P 448, AHw. 871)
From Eg. pḏ.tj ‘der Bogenschütze’ (Wb I 570).
Akkadian
piṭru - (a part of the body) (CAD P 449)
Or pidru, pitru. No definitive etymology can be suggested.
Akkadian
piyāmu - a textile (CAD P 371)

Probably related to Ar. fiˀām- ‘a thing which is spread to sit upon or to lie upon’, Gez. fāˀm ‘woof, spun yarn, opening of a tunic’, Tgn. faˀmi ‘the thread which is in the shuttle while weaving; thread for making the wool; weft’.

Akkadian
piyapiya - (a plant) (CAD P 371, AHw. 863)
No etymology can be suggested, probably onomatopoeic.
Akkadian
pizallūru - gecko (CAD P 451, AHw. 871)
Or piṣallūru. Fem. pizallurtu, in Mari pišḫallurtu.
No definitive etymology can be suggested. Cf. *pVṣγ-’gecko’, even if the by-form pišḫa- does not readily support this equation: while ḫ may indeed reflect (or render) *ġ, Akk. š does not regularly correspond to *ṣ. At any rate, the latter part of the Akkadian lexeme (-llūru) remains diachronically obscure.
Akkadian
pitpabaga - (an official) (CAD P 436, AHw 869)
From Old Iranian *piθfa-baga- “distributor of provisions”. According to Dandamayev 1992, 38, “pit(i)pabaga distributed provisions for workmen (garda) of domains belonging to Persian nobility”.
Akkadian
pû - mouth (CAD P 453, AHw. 872)
Akkadian
pû - chaff, husks (of grain plants), straw, stubble (CAD P 471, AHw. 874)
No definitive etymology can be suggested.
Akkadian
puāgu - to take away by force (CAD P 472, AHw. 874)
Derived words: paˀˀugu ‘taken away’ (CDA 271).
No etymology can be suggested for this specifically Assyrian verb.