This question already has an answer here:
Consider the question:
What is/are the meaning and connotations of this phrase?
Clearly you would say:
What is the meaning of this phrase?
What are connotations of this phrase?
and obviously you could just restructure the sentence to avoid the ambiguity:
What is the meaning of this phrase, and what are it's connotations?
But supposing you want to use the original phrase, which form of the verb is correct? Is there a correct form?