SEDonline
Semitic Etymological Database
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Hebrew
gap - the long portion of the wing; arms, shoulders
(Jastrow 262)
Reconstruction
PS
*gapp-, *ˀa-gapp-
- wing
(SED I No. 88)
There is a trend to compare this root with Sem. *gd/ḏp ‘to fly’ > *gadp- ‘wing’ implying a secondary formation with loss of *-d-, which is unlikely