/vek sil"euhm/ , n. , pl. vexilla /vek sil"euh/ .
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, vexil /vek"sil/ . Bot. the large upper petal of a papilionaceous flower. See diag. under papilionaceous .
5. Ornith. Rare. the web or vane of a feather.
[ 1720-30; velum sail (see VEIL) ]