刀（dāo）
字形：
古体“刀”字像有柄的刀型，是一种兵器，后泛指斩、切用的工具。汉字中以“刀”为偏旁的字，都与刀的功用有关，后来也把功用不同的各种有刃工具称为“刀”，如剪刀、剃须刀。
The ancient form of the character “刀” was the image of a short-handled, backarched knife. It was originally a weapon, and later used as a chopping and cutting utensil. The Chinese characters with “刀” as their radicals all carry the meaning of or have the function of a knife. Later, various edge tools with different functions were all called “刀”, such as “剪刀” (scissors) and “剃须刀” (razors).
字义：
knife
组词：
菜刀（càidāo）：kitchen knife
刀鞘（dāoqiào)：scabbard
冰刀（bīngdāo) ：ice skate blade
刀刃(dāorèn)：knife edge
军刀(jūndāo)：saber
刀子(dāozi)：knife
例句：
Nà bǎ dāo de dāorèn hěn fēnglì.
1、那把刀的刀刃很锋利。
That knife has a very sharp edge.
Ruìshì jūndāo hěn yǒumíng.
2、瑞士军刀很有名。
The Swiss Army Knife is quite famous.
Wǒ děi móyìmó nà bǎ càidāo le.
3、我得磨一磨那把菜刀了。
I have to sharpen the kitchen knife.
