the compound word 'tongue-lashing' is a vivid english metaphor originating in the 19th century. it combines 'tongue', the physical organ central to speech, with 'lashing', which denotes a forceful, whip-like striking action. the logic is transparent: harsh, critical words are figuratively equated to physical blows delivered by the tongue. this construction exemplifies the english tendency to create expressive, imagery-laden terms for abstract concepts like verbal reprimand, drawing from concrete, physical experiences.

Structure: tongue (body part) + lashing (act of striking) tongue (old english, tunge, meaning the bodily organ of speech); lashing (english, from the verb 'to lash', meaning to strike or beat, here used metaphorically)