vexil

noun, plural vex·il·la [vek-sil–uh] /vɛkˈsɪl ə/.

1. a military standard or flag carried by ancient Roman troops.
2. a group of men serving under such a standard.
3. video frequency.
4. Also vex·il [vek-sil] /ˈvɛk sɪl/. Botany. the large upper petal of a papilionaceous flower.
5. Ornithology Rare. the web or vane of a feather.

noun plural -la (-lə)

1. ornithol the vane of a feather
2. botany another name for standard (def. 16)