n.[C]

1. 記號，符號
2. 標誌；招牌；標牌
   The sign says "No Parking".

   告示牌上寫著"禁止停車"。

3. 手勢；暗號；表示[+to-v][+that]
   I talked with him by signs.

   我和他用手勢交談。

4. 徵象；前兆[（+of）][+（that）]
   World trade is showing signs of revival.

   世界貿易正顯示出重新活躍的徵兆。

5. 【宗】神蹟，顯靈
6. 【醫】症候
   Blood in phlegm can be a sign of lung cancer.

   痰中帶血可能是肺癌的徵兆。

7. 【天】宮（十二宮）

vt.

1. 簽（名）；寫下
   He signed his name on the cheque.

   他在支票上簽了名。

2. 簽名於，簽署
3. 簽約僱用
4. 做手勢（或其他動作）通知
   She signed the child to be quiet.

   她示意孩子安靜下來。

5. 對……畫十字
6. 預示
   All this signs rejuvenation of agriculture.

   所有這些都預示著農業將復甦。

vi.

1. 簽字，署名
2. 簽約受僱用[（+with）]
   He signed with the firm.

   他與那家公司簽約。

3. 做手勢示意
   She signed to us to stop talking.

   她做手勢示意我們不要講話。

n.

1. an object, quality, or event whose presence or occurrence indicates the probable presence, occurrence, or advent of something else.
   ▸Medicine  an indication of a disease detectable by a medical practitioner even if not apparent to the patient. Compare with symptom.
   ▸N. Amer. the trail of a wild animal.
2. a signal conveying information or an instruction.
   ▸a gesture used in sign language.
3. a public notice giving information or instructions in a written or symbolic form.
4. a symbol or word used to represent an operation, instruction, concept, or object in algebra, music, or other subjects.
5. Astrology  each of the twelve equal sections into which the zodiac is divided, named from the constellations formerly situated in each, and associated with successive periods of the year according to the position of the sun on the ecliptic.
6. Mathematics  the positiveness or negativeness of a quantity.

v.

1. write one's name on (something) for the purposes of identification or authorization.
   ▸write (one's name) for such a purpose.
2. (with reference to a sports player, musician, etc.) engage for or commit oneself to work by signing a contract.
3. use gestures to convey information or instructions.
   ▸communicate in sign language.
4. indicate with signposts or other markers.
5. mark or consecrate with the sign of the cross.