Apparently from the same root as Ziv (in the sense of prominence); an angle (as projecting), i.e. (by implication) a corner-column (or anta) -- corner(stone).
Psalm 144:12 BIB:בִּֽנְעוּרֵ֫יהֶ֥ם בְּנוֹתֵ֥ינוּ כְזָוִיֹּ֑ת מְ֝חֻטָּב֗וֹת תַּבְנִ֥ית NAS: And our daughters as corner pillars fashioned KJV: [that] our daughters [may be] as corner stones, polished INT: their youth and our daughters corner fashioned the similitude
Zechariah 9:15 BIB:וּמָֽלְאוּ֙ כַּמִּזְרָ֔ק כְּזָוִיּ֖וֹת מִזְבֵּֽחַ׃ NAS: like a [sacrificial] basin, [Drenched] like the corners of the altar. KJV: like bowls, [and] as the corners of the altar. INT: will be filled A basin the corners of the altar
