2 occurrences in 2 dictionaries
Reference: Cornerstone
Fausets
Binding together the sides of the building. Some of the temple ones are 19 ft. long and 7 1/2 thick. Compare Solomon's temple, 1Ki 5:17; 7:9. Christ is the true grainer stone, laid by the Father in Zion, on whom the whole church rests (Isa 28:16). He is also "the head stone," or fifth crowning top grainer of the pyramid, in which the whole building meets and culminates (Zec 4:7). Compare Ge 49:24; Ps 118:22; Mt 21:42; Ro 9:33; Eph 2:21.
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Smith
Corner-stone,
a quoin or cornerstone, of great importance in binding together the sides of a building. The phrase "corner-stone" is sometimes used to denote any principal person, as the princes of Egypt,
and is thus applied to our Lord.