headcase

A mentally unbalanced, unpredictable person, especially one who displays aggressive behavior.

Noun

  1. A mentally unbalanced, unpredictable person, especially one who displays aggressive behavior.
    • "A stockbroker doesn't have 80,000 people sitting behind him just waiting for a mistake," says Jim Fassel, whom fans serenaded with "Fire Fassel!" chants during his final weeks as head coach of the New York Giants last...
  2. A genetic sequence that inhibits terminal branching of the trachea and regulates dendrite pruning.
    • Another gene downstream of EcR/Usp is headcase. Screening genes that show genetic interactions with EcR mutants, Loncle and Williams identified headcase as a regulator of dendrite pruning (Loncle and Williams 2012). -...

    Synonyms: hdc

Origin

From head + case.

Forms

headcases head-case head case