Refers to the inner seat of thought, emotion, or awareness. Often used in set phrases like 心頭に浮かぶ (come to mind) or 心頭を去らない (cannot get out of one's mind). Slightly formal or literary.
That scene is burned into my mind and won't leave.
Suddenly, a thought came to mind.
clearing one's mind of all worldly thoughts; emptying one's mind
rage; anger
Standard kanji spelling; used in formal and literary contexts.
Compound of 心 (heart/mind) and 頭 (head), suggesting the seat of thought and emotion. The exact historical derivation is uncertain, but the word has been used in literary Japanese for centuries.