In classical Chinese, 'tún' often refers to a piglet.
Tips
usage
豚 rarely stands alone in modern Chinese — you mostly meet it inside compounds: 海豚 (hǎitún 'dolphin'), 河豚 (hétún 'pufferfish'), 豚鼠 (túnshǔ 'guinea pig'). For 'pig' as a stand-alone word use 猪 (zhū). 豚 survives as the classical/literary word for 'piglet'.
history
Originally 豚 depicted a hand (又) holding a piece of meat (肉) beside a pig radical (豕) — a piglet ready for sacrifice. The character is widely used in Japanese as the everyday word for pork (豚, ぶた buta), but in Chinese it stayed mostly literary.
