a pirate flag, usually of black cloth with a white skull and crossbones on it; Jolly Roger.
a flag having two yellow and two black squares, signifying the letter L in the International Code of Signals: formerly so called when used by itself to indicate the presence of cholera on board a vessel.
a signal given to an automobile racing driver to stop, usually because the car may have a dangerous problem that requires inspection.
Harper’s Round Table, August 13, 1895 Various
Khartoum Campaign, 1898 Bennet Burleigh
another name for the Jolly Roger
any of the minute, black gnats of the dipterous family Simuliidae, having aquatic larvae. Historical Examples Handbook of Medical Entomology William Albert Riley The Prairie Child Arthur Stringer Handbook of Medical Entomology William Albert Riley Gardening for the Million Alfred Pink Tales of lonely trails Zane Grey Handbook of Medical Entomology William Albert Riley noun […]
a reducing flux consisting of finely divided carbon and potassium carbonate.
(in Cape Cod, Mass.) a dense fog.
a weasellike polecat, Mustela nigripes, of prairie regions of the U.S., having a yellowish-brown body with the tip of the tail and legs black: an endangered species. Historical Examples Watched by Wild Animals Enos A. Mills