pB. Borrowing from Akk. natbāku/natbaku.
A loanword from Akkadian paššūru ‘table’. The most likely source of t is *ṯ, see EDA I 454 on the etymology issues.
< Akk. pīḫatu, pāḫatu (Kaufman 1974, 82, EDA I 34). Constr. paḥat. The Massoretic vocalization of the Hebrew and Biblical Aramaic forms unambiguously points to a geminated guttural in the proto-form (*paḥḥ-at-), сf. Mankowski 2000, 128f.