How to write 龀

龀 (齔 chèn) [动] 1. 小孩换牙（乳齿脱落长出恒齿）。 [En.] The process of a child losing milk teeth and growing permanent teeth. 龀 (齔 chèn) [名] 1. 乳齿 [En.] Milk tooth. 2. 泛指童年 [En.] Refers generally to childhood. 引文 1. 《说文》：龀，毁齿也。男八月生齿，八岁而龀;女七月生齿，七岁而龀。 [En.] From "Shuo Wen": "Chèn" is to lose teeth. When boys are born in August, they lose their teeth at eight; when girls are born in July, they lose their teeth at seven. 2. 《管子·小问》：未龀不入军门。 [En.] From "Guanzi": "Those who have not yet lost their teeth cannot enter the army." 例子 如: 龀髫 (换牙和垂发。喻幼年) [En.] E.g., "Chèn tiáo" (the process of losing teeth and having long hair. It refers to childhood). 如: 龀龆 (指幼年) [En.] E.g., "Chèn tiáo" (referring to childhood). 如: 始龀 (刚换牙，指七八岁) [En.] E.g., "Shǐ chèn" (just lost teeth, referring to seven or eight years old). 龀 (齔 chèn) [名] 1. 乳齿 [En.] Milk tooth. 2. 泛指童年 [En.] Refers generally to childhood. 例子 如: 龀童 (七、八岁的小孩) [En.] E.g., "Chèn tóng" (a child of seven or eight years old). 如: 龀年 (童年) [En.] E.g., "Chèn nián" (childhood). 如: 龀岁 (童年) [En.] E.g., "Chèn suì" (childhood).