PS

*paḥl- - penis (SED I No. 210; Kogan 2011: 219)

Semantically a complicated case. One of the derived meanings to be reconstructed as PS is ‘domestic animal (used to fecundate female cattle)’. There is also a verbal root more probably produced on the common Sem. level than in each individual language independently. The Afras. data, though scarce, and the typology of semantic evolution speak for ‘thigh’ (see Akk. paḫallu) as the primary meaning of this root developed into ‘penis’ (and further into ‘domestic animaľ and ‘to be sexually aroused’), and not vice versa. For analogy see *paḫiḏ- - ‘hip, thigh’ (No. 211). 

Akkadian
paḫallu - thigh (CAD P 20, AHw. 810)
Akkadian
puḫālu - stud, breed animal (CAD P 479, AHw. 875)
Ugaritic
pḥl - donkey (WUS 254)
See discussion in SED I No. 210
Syriac
pāḥlātā - testicles (LSyr. 562, SL 1178)
Mandaic
pihla - male organ, phallus(?) (MD 370)
Arabic
faḥl- - stallion, male animal used for fecundation (BK 2 549, Lane 2345)
Arabic
fuḥḥāl- - the male palm-tree (Lane 2346)

Probably related.

Geez
faḥala - to be lasxivious, sexually aroused (animals) (CDG 156)
Chaha
fäna - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Ezha
fänna - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Endegen
fänˀa - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Gyeto
fänˀa - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Muher
fʷärra - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Masqan
fänna - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Gogot
fʷärra - to have intercourse (EDG 240)
Leslau admits *flH as an underlying root, in which case a metathesis from *pḥl is possible.
Mehri
fēḥəl - penis (ML 90)
Jibbali
fáḥəl - penis (JL 54)
Harsusi
feḥl - penis (HL 31)
Soqotri
fáḥal - penis (LS 335)