Var. pâḳu.
Adjective:
pāḳu,
pīḳu. Derived words: pīḳu ‘distress, difficulty’ (CAD P 394); pūqu, puqqu (a body part?) (CAD P 514, AHw. 880).
Cf. Arb. fwq (VII) ‘to become lean, emaciated’, (VIII) ‘to become poor, in want or need’, fāqat- ‘poverty, want or need’ (Lane 2461f.), cf. especially pīḳu ‘distress, difficulty’.