A set of code words that stand for the usual names of the letters of an alphabet, usually for clarity of communication when spelling out words.

Alternative form of tartuffism

To remove the layer of scum from (a liquid etc.). / To remove (something) as scum. / To become covered with scum. / (obsolete) To scour (the land, sea etc.). / (obsolete) To gather together, as scum.

present participle of ahh