Origin

This character combines the animal radical on the left, which shows this word relates to animals or animal behavior, with a sound hint component on the right that indicates the approximate pronunciation. The overall character developed to describe a narrow or cramped space, likely because the sound-hint component suggested how the word should be pronounced rather than contributing a separate meaning. The visual arrangement puts the animal classifier where Chinese characters typically place meaning-related components, while the right side serves purely as a phonetic guide. Over time, the character extended to describe anything cramped, tight, or confined, not just spaces where animals might be restricted.