cornerstone

Mane (Îngilîzî)

1. A stone forming the base at the corner of a building.
2. Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
3. (figuratively) That which is prominent, fundamental, noteworthy, or central.

Hevwate

foundation stone

foundation

fundament

groundwork

base

basis

headstone

🪦

keystone

pillar

linchpin

main point

mainstay

core

pillar stone

head stone

Werger

pierre angulaire

Grundstein

Eckstein

piedra angular

pietra angolare

fondement

première pierre

αγκωνάρι

fondamento

pedra angular

θεμέλιος λίθος

cantonata

base

Meilenstein

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin: corner ston

In summary

From Middle English corner ston; equivalent to corner + stone. The figurative sense is in part after Psalm 118:22, and is also quoted several times in the New Testament.