Definition from Wiktionary, the free dictionary
From the root ב־ש־ל (b-sh-l), in the hitpa'él conjugation.
הִתְבַּשֵּׁל (hitbashél) (hitpa'él construction)
- (intransitive, of food) To cook, to be cooked: to be prepared for eating.
- (intransitive, of food) Specifically, to be prepared for eating by being marinated over time in boiling water.