Definition of flashboard in English:

flashboard

Syllabification: flash·board
Pronunciation: /ˈflaSHˌbôrd
 
/

noun

A board used for increasing the depth of water behind a dam.
More example sentences
  • Collecting activities were seriously curtailed in the 1930s when two flashboards, or risers, were added to the top of the extant concrete dam.

Definition of flashboard in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal