Words

Akkadian
pappaltu - seminal discharge (CAD P 107, AHw. 824)
No definitive etymology can be suggested. With AHw. and CDA, pappaltu could be a feminine form of pappasu ‘porridge’ (cf. pappaltu in abakery memorandum, which is clearly derived from pappasu, see Postgate 1994:14), but this is far from evident from the semantic point of view.
Akkadian
pappānu - (mng. uncert.) (CAD P 105, AHw. 823)
No definitive etymology can be suggested. A derivation from *pān pāni < pānu ‘face’ suggests itself, but is hard to substantiate both formally and semantically.
Akkadian
pappardaliˀu - (a stone) (CAD P 107, AHw. 824)
Var. pappardilû.
From the Sum. stone name BABBAR.DILI (also wr. BABBAR.1(DIŠ), see PSD B 23), lit. ‘(a stone with) one white (band)’.
Akkadian
papparḫû - purslane (CAD P 109, AHw. 824)
Var. papparḫu, parparḫu, parpaḫu. Cf. papparḫītu (a papparḫû-like decoration) (CAD P 109).
From Sum. BABBAR.ḪI ‘portulaca’ (PSD B 31).
Akkadian
papparminnu - (a stone) (CAD P 110, AHw. 824)
Var. papparmīnu, papparinu.
From the Sum. stone name BABBAR.MIN(₅) (see PSD B 23, 31), lit. ‘(a stone with) two white (bands)’.
Akkadian
pappasu - porridge (CAD P 111, AHw. 824)
Fem. var. pappaltu (SAD I). Derived: pappasītu (a mineral) (CAD P 111, AHw. 824).

Probably to be analyzed as *pas-pas-, with an eventual connection to *pss ‘to crush, to break into small pieces’.
Akkadian
pappiru - beer bread (CAD B 95, AHw. 103)
The reading pappiru is to be preferred to the traditional bappiru (Deller 1987:65).
From Sum. BAPPIR ‘beer bread’ (PSD B 91).
Akkadian
pappû - (a person) (CAD P 114, AHw. 824)
No definitive etymology can be suggested. The word is found as an Akk. translation in a Kassite vocabulary.
Akkadian
pappu - lock of hair (CAD P 114, AHw. 824)
No etymology can be suggested.
Akkadian
pappu - the cuneiform sign PAB (CAD P 114, AHw. 824)
From Sum. PAB (var. PA₄) ‘elder’ (also as a sign name, Gong 2000:171).