Gog

From Biblical Hebrew גּוֹג (Gōg).

Gog

1. Gog and Magog, a figure (or two figures) mentioned in the Hebrew Bible in Ezekiel 38 and 39, and variously identified by later writers with Satan or certain hostile nations. (See Revelation 20:8.)
2. (obsolete) Replacement for the word God when swearing, forming vulgar minced oaths originating in the 14th century: by Gog’s wounds, Gog’s bread...
   • 1593, anonymous author, The Life and Death of Iacke Straw […], Act I:

     By gogs bloud my maiſters, we will not put vp this ſo quietly, […]

• king of the north

From Welsh Gog.

Gog (plural Gogs)

1. (UK, slang) Synonym of North Walian: a person from North Wales.

• GGO, Ogg

Clipping of gogleddwr (“northerner”) or clipping of gogledd (“north”).

• IPA^(key): /ɡɔɡ/

Gog m or f by sense (plural Gogs, not mutable)

1. (colloquial) a person from North Wales

   Gog yw ei wraig e.

   His wife is a North Walian.

2. (colloquial) North Walian dialect of the Welsh language

   Sa i'n siarad Gog.

   I don't speak North Walian Welsh.

• hwntw (“South Walian”)

The word Gog is not normally mutated.

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “Gog”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies