DCHP-1 Online
flanker ((2)) 2 [< obs. flanker, v., glow, sparkle] Nfld 
n. a bright spark from a chimney or fire.
- 1835 (1836) I had discovered this cabin by the "flankers," or bright sparks, which flew up his chimney in the clear starlit sky, from his brisk birch fire.
- 1955 flankers [are] sparks from a chimney[.]
- 1835 (1836) I had discovered this cabin by the "flankers," or bright sparks, which flew up his chimney in the clear starlit sky, from his brisk birch fire.