牙

• 拼音: yá
• 汉字拆解: 牙 = ancient pictograph depicting interlocking upper and lower teeth

含义

Tooth; teeth. Refers to the hard structures in the mouth used for biting and chewing.

Used in many compounds: 牙刷 (toothbrush), 牙膏 (toothpaste), 牙医 (dentist), 换牙 (to lose baby teeth). In everyday speech, 牙 can refer to a single tooth or teeth generally. Also appears in idioms such as 以牙还牙 (an eye for an eye, lit. tooth for tooth).

例句

1. 医生建议每半年检查一次牙，预防蛀牙。
2. 小孩子换牙是非常正常的生长过程。
3. 他的牙很白，因为每天都认真刷牙。

用法指南

语境: everyday, health

语气: neutral

正确说法

• 我牙疼，需要去看牙医。(My tooth hurts — I need to see a dentist.)
• 每天早晚刷牙对牙齿健康很重要。(Brushing your teeth morning and night is important for dental health.)

错误说法

• 用'牙'称呼动物的牙齿时忘记语境 (When referring to animal fangs or tusks, 牙 still works but 獠牙 is more specific for long fangs — context usually makes the meaning clear)

起源与历史

An ancient pictograph of interlocking teeth, one of the earliest written forms found in oracle bone script.

文化背景

世代: All ages

社会背景: Universal