This is the 214th most frequent Hebrew word.
הבא
The Hebrew word "הבא" means "the next" or "the coming."
הבא is used as an adjective here, meaning 'next' and describing 'book'.
אני מתכוון לקרוא את הספר הבא ברשימה.
I intend to read the next book on the list.
הבא specifies 'the next' in a sequence, as per the order of items.
תן לי בבקשה את השלט הבא בתור.
Please give me the next remote control in line.
הבא functions to indicate the upcoming item to address, namely 'topic' in this context.