The Collaborative International Dictionary
Cross-springer
Cross-springer \Cross"-spring`er\ (-spr?ng`?r), n. (Arch.) One of the ribs in a groined arch, springing from the corners in a diagonal direction.
Note: [See Illustr. of Groined vault.]
Wiktionary
cross-springer
n. (context architecture English) One of the ribs in a groined arch, springing from the corners in a diagonal direction.