What is ambiguity?

when a word or phrase creates a certain feeling
when a word is the same as the sound it defines
when an object or idea is used to represent something else
when a word or phrase can be interpreted in multiple ways

Oh, no no no, it was too cold always
(Still the dead one lay moaning)
I was much too far out all my life
And not waving but drowning.

What does the cold most likely symbolize?

the inevitability of death
the deep ocean waters
the man’s adversities in life
the attitude of the man’s friends