a system of fan vaults.
(architect) vaulting having ribs that radiate like those of a fan and spring from the top of a capital or corbel Also called palm vaulting
[fan-weed] /ˈfænˌwid/ noun 1. the pennycress, Thlaspi arvense.
noun, Architecture. 1. a window having a fanlike form with radiating sash bars, used especially as a fanlight.
[fan-wahyz] /ˈfænˌwaɪz/ adverb 1. spread out like an open : to hold cards fanwise.
noun 1. . noun 1. any tube-dwelling polychaete worm of the family Sabellidae, having long tentacles that spread into a fan when the worm emerges from its tube