Definition of "vulgarly"

Rosemary peeled off Sloane Square, Hartnell, decorations-will-be-worn, fog primroses, crumpets by the fire, and let fly vulgarly at Vythilingam.

1959, Anthony Burgess, Beds in the East (The Malayan Trilogy), published 1972, page 498

The last, the knotted fucus, which has long slender stalks, leaves small, bulbs or vesicles in the middle of the stalks, vulgarly called eelwrack, is most esteemed by our kelp-makers.

1809, The Tradesman, volume 3, page 1