vex·​il·​lum | \ vek-ˈsi-ləm How to pronounce vexillum (audio) \
plural vexilla\ vek-​ˈsi-​lə How to pronounce vexillum (audio) \

Definition of vexillum

1 : a square flag of the ancient Roman cavalry
2 : the web or vane of a feather
3 : the upper, large, often lobed petal of a papilionaceous flower (as of a pea or bean plant) : banner sense 6, standard sense 8a The flowers are blue with a white patch on the vexillum (standard) which turns to purple as the flower ages …— David Simons — compare keel sense 2b, wing sense 2e(2)

Other Words from vexillum

vexillary \ ˈvek-​sə-​ˌler-​ē How to pronounce vexillum (audio) \ adjective
a vexillary corolla

First Known Use of vexillum

1683, in the meaning defined at sense 1

History and Etymology for vexillum

Latin; akin to Latin velum curtain, awning

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The first known use of vexillum was in 1683

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Cite this Entry

“Vexillum.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2021.

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