D defs.my
Entry 2 senses Webster, 1913

collaborator

/kəl-ăb'-ẽr-ātˌ-ẽr/ · col·lab·o·ra·tor · IPA /kəˈlæbəɹeɪtɚ/
01 n. An associate in labor, especially in literary or scientific labor.
  1. 1.
    An associate in labor, especially in literary or scientific labor.
  2. 2.
    one who willingly cooperates with an enemy, especially an enemy nation occupying one's own country.