丁 - Wiktionary, the free dictionary

丁 (Kangxi radical 1, 一+1, 2 strokes, cangjie input 一弓 (MN), four-corner 1020₀, composition ⿱一亅)

• 仃, 㓅, 叮, 圢, 奵, 帄, 㣔, 忊, 打, 汀, 𭷸, 䦺, 朾, 灯, 玎, 町, 盯, 矴, 糽, 耓, 耵, 虰, 訂(订), 䟓, 酊, 釘(钉), 𠁂, 靪, 飣(饤), 䰳
• 𫞻, 邒, 𤆉, 㼗, 𠀲, 頂(顶), 𩾚, 亍, 宁, 𥫙, 艼, 甼, 䆑, 亭, 𠅘, 㸘, 寕, 閅, 寧, 厅, 庁, 疔, 㐉, 可, 𭴀, 于, 𣑥, 𤡛, 𥢃, 𬻄

Wikisource

• Kangxi Dictionary: page 75, character 3
• Dai Kanwa Jiten: character 2
• Dae Jaweon: page 135, character 1
• Hanyu Da Zidian (first edition): volume 1, page 2, character 5
• Unihan data for U+4E01

Pictogram (象形) – different theories exist:

• a city wall. The derivative 成 and later 城 is now used to represent this sense. Characters like 邑， 正／征 contains it as a semantic component.
• a head. The derivative 天 and 頂 is now used to represent this sense. Characters like 元 contains it as a semantic component.
• a nail. The derivative 釘 is now used to represent this sense.

丁

1. the fourth of the ten heavenly stems
2. fourth; D

   丁烷  ―  dīngwán  ―  butane (fourth alkane)

3. robust; vigorous
4. male adult; man

   壯丁／壮丁  ―  zhuàngdīng  ―  able-bodied man

5. person; may specifically refer to member of a family

   人丁  ―  réndīng  ―  person

6. small cube

   肉丁  ―  ròudīng  ―  pork cubes

7. (literary) to encounter
8. (Hong Kong Cantonese) Short for 出前一丁 (“Demae Itcho”), a type of instant noodles.

   撈丁／捞丁 [Cantonese]  ―  lou¹ ding¹ [Jyutping]  ―  (please add an English translation of this usage example)

9. a surname

   丁肇中  ―  Dīng Zhàozhōng  ―  Samuel Chao Chung Ting (Chinese-American physicist)

   • 「他總仍舊是偷。這一回，是自己發昏，竟偷到丁舉人家裡去了。他家的東西，偷得的麼？」 [MSC, trad.]
     「他总仍旧是偷。这一回，是自己发昏，竟偷到丁举人家里去了。他家的东西，偷得的么？」 [MSC, simp.]

     From: 1919, Lu Xun, 孔乙己 (Kung I-chi)

     “tā zǒng réngjiù shì tōu. Zhè yī huí, shì zìjǐ fāhūn, jìng tōu dào Dīng jǔrén jiā lǐ qù le. Tā jiā de dōngxi, tōu de de me?” [Pinyin]

     "He was stealing again. This time he was fool enough to steal from Mr. Ting, the provincial scholar! As if anybody could get away with that!"

• (Chinese heavenly stems) 天干 (tiāngān); 甲 (jiǎ), 乙 (yǐ), 丙 (bǐng), 丁, 戊 (wù), 己 (jǐ), 庚 (gēng), 辛 (xīn), 壬 (rén), 癸 (guǐ) ^{(Category: zh:Chinese heavenly stems)}

• → Zhuang: ding

丁

1. Only used in 丁丁 (zhēngzhēng).

From the orthographic similarity of J (zei¹, “penis”), an initialism of jer (zoe¹, “penis”), which is a romanisation of 脧 (zoe¹).

丁

1. (Hong Kong Cantonese, slang, euphemistic) penis (Classifier: 條／条)
2. (Hong Kong Cantonese, Internet slang) to masturbate; to have sexual fantasy towards another individual