乃 nǎi to be; thus; so
Made up of [丿 piě 'slash' radical 4]Used as component 乃 in :奶 nǎi
Made with 2 strokes.
Represents a pregnant woman with swollen breasts and abdomen, hence the abstract meaning 'so' to indicate generation of a connected phrase
Ancient small seal form 
Related characters
Also uses 丿 piě component: 必 bì (certainly) 弟 dì (younger brother) 乎 hū (at) 久 jiǔ (long time) 九 jiǔ (nine) 乐 lè (music) 么 me (what) 年 nián (year) 少 shǎo (less) 生 shēng (produce) 失 shī (to lose) 勿 wù (do not) 戊 wù (fifth (ordinal)) 午 wǔ (noon) 义 yì (justice) 之 zhī (him) 族 zú (clan)
Sounds same
奶 nǎi (milk)Pronunciation
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Stroke order for character 乃, kindly provided under Wikimedia creative commons license ➚