Definitions

léi used in 礌石[léi shí]; Taiwan pr. [lèi]

Etymology

About

is a phono-semantic compound, normally written with the stone radical on the left and the character ('thunder') on the right (variant horizontal arrangements exist). The stone radical places the meaning firmly in the domain of rocks and stones, while indicates the pronunciation. The character denotes large stones or boulders that were stockpiled to be rolled down from city walls or steep embankments as a defensive siege tactic. The phonetic not only supplies the sound but aptly evokes the thunderous crash of these stones hurtling downhill. Due to its specific military application, is found mainly in historical military manuals, fortification records, and classical war narratives.