DICTIONARY · CC-CEDICT

底線

简底线 · 繁底線

Mandarin · pinyin dǐ xiàn

bottom line; the limit of what one is prepared to accept
(sports) baseline
(sewing) under thread
spy; informer; plant

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Characters in this entry

底: dǐ · bottom, underneath, underside
線: Look up this written character
线: xiàn · line, thread, wire; clue

Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

3–4 · di3 xian4

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Dictionary tones. Connected speech can change their realization.

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2character links1same-tone record

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Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

底線 · find source passages ↗ · 底线 · find source passages ↗

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Compare dictionary sources Wiktionary · 5 senses · 1 Cantonese reading

Rime Cantonese 粵拼

dai2 sin3

Cantonese word readings for 底線. This lexicon supplies readings, not definitions.

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Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

noun

(sports) baseline
(sewing) lower thread
(figurative) threshold; limit; bottom line
(Mainland China, espionage) planted agent
(Taiwan, typography and computing) underscore

Source page · dump 2026-09-02 · Contributors & history

Wiktionary contributors · CC BY-SA 4.0 · source & license · Data pack