n. (Hira=じ) character, digital representation of a letter or other symbol (Computers), letter or symbol

n. (Trad=字, Pinyin=zi4) letter, symbol, character, word, style of writing, calligraphy

adj. (Trad=字, Pinyin=zi4) numeric

n. (Simp=字, Pinyin=zi4) letter, symbol, character, word, style of writing, calligraphy

adj. (Simp=字, Pinyin=zi4) numeric

¹ (1) a Korean foot; a ja (a unit of length, 0.33m)
(2) a ruler; a rule; a measure; a square; a yardstick

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² Come on!; Come now!; Here!; Here you are!

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[子] a son; a child; the master; the sign of the Rat; Confucius

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[字] (1) a character; a letter; an ideograph
(2) a pseudonym; another name; an alias; a nickname

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[紫] purple; violet; amethyst

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[者] (1) a person; one; a fellow; a guy; a chap
(2) a thing; that; this

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[自] from

yi2 zi4 zhi1 shi1
A teacher of one word.
Referring to a carefully worded writing, which can be rendered perfect by only a slight alteration. Compare with 一字千金 (yi2 zi4 qian1 jin1).

yi2 zi4 qian1 jin1
A single word is worth a thousand pieces of gold.
A literary gem. Said of a well-composed essay or poem with ingenious use of words. Compare with 一字之师 (yi2 zi4 zhi1 shi1) and 一诺千金 (yi2 nuo4 qian1 jin1).