It's a diminutive form of the Spanish word "ángel," meaning angel. The suffix "-itos" adds a sense of smallness or endearment.
It can be used to refer to:
* Small angels: Figurines, statues, or paintings depicting angels, especially those intended for children.
* Children: In a figurative sense, referring to children as pure and innocent like angels.
* Angels in heaven: Sometimes used to refer to deceased children or loved ones.
The specific meaning of "angelitos" will depend on the context in which it's used.