Defn: A vitrified sand tube produced by the striking of lightning on sand; a lightning tube; also, the portion of rock surface fused by a lightning discharge.
FULGURY
Ful"gu*ry, n. Etym: [L. fulgur.]
Defn: Lightning. [Obs.]
FULHAM Ful"ham, n. Etym: [So named because supposed to have been chiefly made at Fulham, in Middlesex, Eng.)
Defn: A false die. [Cant] [Written also fullam.] Shak.
FULIGINOSITY
Fu*lig"i*nos"i*ty, n. Etym: [Cf. F. fuliginosité.]
Defn: The condition or quality of being fuliginous; sootiness; matter deposited by smoke. [R.]
FULIGINOUS Fu*lig"i*nous, a. Etym: [L. fuliginosus, from fuligo soot: cf. F. fuligineux. See Fume.]
1. Pertaining to soot; sooty; dark; dusky.
2. Pertaining to smoke; resembling smoke.