Answer:
False
Explanation:
It is in fact an idiomatic expression. This expression can be found in Emily Dickinson's poem. Here is an excerpt:
But never met this fellow,
Attended or alone,
Without a tighter breathing,
And zero at the bone.
It seems to be a reference to zero degrees (super cold). As if the character is shivering from fear with the same intensity that the character would if it was 0 degrees.
