This is the 732nd most frequent Italian word.
manca
"Missing" or "lacking."
Here, 'manca' is used to express a sense of missing or longing for something (the object being missed is indicated by 'mi').
Mi manca il mio libro preferito.
I miss my favorite book.
In this context, 'manca' means 'to be lacking' or 'to be absent,' referring to something missing from the subject.
A questa macchina manca una ruota.
This car lacks a wheel.
Here, 'manca' denotes that a short amount of time remains until an event happens (reflected in the usage with time constructs).