English Dictionary

skewback

noun

(architecture) The side of an arch; the course of masonry on the top of an abutment with a slope for the base of the arch to rest against.

The mason carefully constructed the skewback of the arch.

意味（1）

(architecture) The side of an arch; the course of masonry on the top of an abutment with a slope for the base of the arch to rest against.

The avalanche shelter itself consists of a series of heavily reinforced arches, supported by substantial piers on the cliff-side, and on skewbacks cut deep into the rock on the other.