An address generated by repeated trial until it begins with a chosen string of characters.
Why it matters
A cosmetic preference with a cryptographic cost when the generator seeds badly. Wintermute lost approximately $160m to a documented weakness in the Profanity generator. Addresses produced by standard wallet key derivation are not affected by that class of flaw.
Not advice. Definitions are for understanding, not instruction. Nothing here is financial, legal, tax or security advice.