Definition of outflash in US English:

outflash

noun

rare
  • An outburst; an outbreak.

verb

  • 1with object To surpass in brilliance, outshine.

  • 2no object To flash out.

Origin

Mid 19th century; earliest use found in Alfred Tennyson (1809–1892), poet. From out- + flash<br>mid 19th century; earliest use found in Robert Browning (1812–1889), poet. From out- + flash.

Pronunciation

outflash

/ˈaʊtflaʃ/