医 yī doctor
Made up of [匸 xǐ box; bag radical 23, 矢 shǐ arrow; to vow radical 111]Alternative traditional form of character: 醫
Made with 7 strokes.
Can be thought of as shooting arrows at a disease - a doctor healing you. This is clearer in the complex traditional form that has 'disease' and 'medicine' parts.
Ancient small seal form 
Related characters
Also uses 矢 shǐ component: 矮 ǎi (low) 候 hòu (wait) ; 侯 hóu (nobleman) ; 铁 tiě (arms) ; 知 zhī (to know) ; 族 zú (clan)
Sounds same
一 yī (one) ; 衤 yī (clothes) ; 衣 yī (clothes)Different tone
颐 yí ; 宜 yí (proper) ; 夷 yí (barbarians) ; 乚 yǐ (hidden) ; 以 yǐ (to use) ; 椅 yǐ (chair) ; 已 yǐ (already) ; 乙 yǐ (twist) ; 易 yì (easy) ; 亿 yì (100,000,000) ; 益 yì ; 义 yì (justice) ; 亦 yì (also) ; 邑 yì (city) ; 弋 yì (catch) ; 艺 yì (skill) ; 忆 yì (to recollect) ; 意 yì (idea) ; 异 yì (different)Pronunciation
Sound file kindly provided by shtooka.net ➚ under a Creative Commons Attribution Share Alike License
Proverbs
死马当活马医 sǐ mǎ dāng huó mǎ yī Persevering when it is already too late. A lost cause讳疾忌医 huì jí jì yī Keeping mistakes and shortcomings to yourself. Refuse to listen to advice.