n.

1. 人口[U][C]
   The population of this country rose by 10 percent.

   這個國家的人口增長了百分之十。

   The country has a population of 100 million.

   這個國家有一億人口。

2. （某地域的）全部居民[the S][G]
   Only ten percent of the population here is illiterate.

   這裡只有百分之十的居民是文盲。

3. （具有共同特色的）人們；（某地域的）特定居民[the S][G]
4. （某地區某類）動物（或植物）的總數；（某地區某類）物品的總數[the S][G]
   The elephant population in that area is falling.

   那個地區的大象總數在下降。

5. 【生】族群
6. 【統】（對象）總體，母體

n.

1. all the inhabitants of a particular place.
   ▸a particular group within this.
   ▸the action of populating an area.
2. Biology  a community of interbreeding organisms.
3. Statistics  a finite or infinite collection of items under consideration.