chún
variant of 蓴|莼[chun2]
used in 蓴菜|莼菜[chun2 cai4]
莼羹鲈脍
chún gēng lú kuài
(idiom) the dishes from one's hometown
莼菜
chún cài
water shield (Brasenia schreberi), an edible water plant
莼鲈之思
chún lú zhī sī
(idiom) homesickness