cold/ kəuld /

1.adjective [+water] [ object] 
凉的

2.adjective [+weather] [ room] [ meat] 
冷的

3.adjective [+person] 
(unemotional) 冷淡的

4.adjective
(unfriendly) 不友好的

5.noun [u] 
the cold (weather) 寒冷天气

6.noun [c] 
(illness) 感冒

I've got a cold.
我感冒了。
it's cold
天气寒冷
to be {or} feel cold
 [person+] 感到冷
to catch (a) cold
患感冒
in cold blood
 [kill etc+] 残忍地
to have/get cold feet (about sth)
(在某事上)临阵畏缩