Definitions

léi a log trap used to defend a city

Etymology

Phonosemantic compound. represents the meaning and represents the sound.

About

The Chinese character is a phono-semantic compound: the left-side radical means 'wood' and indicates the meaning, while the right-side component means 'thunder' and supplies the pronunciation. It was coined to name a heavy wooden log, sometimes studded with metal spikes, that ancient defenders would roll down hills or from city walls to crush attacking enemies. The wood radical points to the weapon's material, and the phonetic provides the sound without additional semantic contribution.