(comics, fiction) A blue pixie with white stocking cap, from the media franchise The Smurfs. / (Internet slang) A smurf account. / (computing, security) A smurf attack.

A hydrometer, especially one that is used to measure the strength of an acid. / Any of various other devices used to measure acidity, either chemical or electronic.

The act or process by which something is unwrapped.

simple past tense and past participle of deaggregate