• n. 中午；正午；全盛期
• n. (Noon)人名；(朝)嫩；(英、巴基)努恩

来自古英语non,第九个小时，下午三点，词源同nine.因古时以六点为基准点，后在14世纪时词义由下午三点过渡到中午12点。

noon

noon: [OE] Noon denotes etymologically the ‘ninth’ hour. It was adopted in the Old English period from Latin nōna, short for nōna hōra, the ‘ninth hour’. Reckoning the day from sunrise, on average six o’clock, this meant that ‘noon’ was three o’clock in the afternoon (which was originally when the office of nones [18] – a related word – was said in the Roman catholic church).

By the 12th century, however, we find noon being used for a ‘midday meal’, and in the early 13th century it had moved on to simply ‘midday’, so it appears that some forward shifting of a meal that had originally taken place in mid afternoon was responsible for altering the meaning of noon (modern English terms for mealtimes, such as tea and dinner, are equally slippery).
=> nine

noon (n.)

mid-12c., non "midday, 12 o'clock p.m., midday meal," from Old English non "3 o'clock p.m., the ninth hour," also "the canonical hour of nones," from Latin nona hora "ninth hour" of daylight, by Roman reckoning about 3 p.m., from nona, fem. singular of nonus "ninth" (see nones). Sense shift from "3 p.m." to "12 p.m." began during 12c., when time of Church prayers shifted from ninth hour to sixth hour, or perhaps because the customary time of the midday meal shifted, or both. The shift was complete by 14c. (same evolution in Dutch noen).

1. There is a ceaseless struggle from noon to night.

从中午到夜晚，争斗没有停歇。

来自柯林斯例句

2. He expected the transfer to go through by today's noon deadline.

他希望转账在今天中午的最后期限之前完成。

来自柯林斯例句

3. Government workers were made to punch time clocks morning, noon and night.

公务员早、中、晚都要打卡。

来自柯林斯例句

4. The conference chairman has set a deadline of noon tomorrow.

会议主席将明天中午定为截止日期。

来自柯林斯例句

5. Shops usually shut from noon-3pm, and stay open late.

商店通常中午到下午3点关门，然后营业到很晚。

来自柯林斯例句