and literally so...

"& lit."

A rare clue type is the "& lit." clue, standing for "and literally so". In this case, the entire clue is both a definition and a cryptic clue. In some publications this is always indicated by an exclamation mark at the end of the clue. For example:

God incarnate, essentially! (4)

The answer is ODIN. The Norse god Odin is hidden in "god incarnate", as clued by "essentially", but the definition of Odin is also the whole clue, as Odin is essentially a God incarnate.

This satisfies the "& lit." clue definition but as read is clearly a cryptic clue. Another example:

Spoil vote! (4)

would give the answer VETO; in the cryptic sense, spoil works as an anagram indicator for vote, while the whole clue is, with a certain amount of licence allowed to crossword setters, a definition.

Another example:

e.g., Origin of goose (3)

gives the answer EGG. Geese find their origins in eggs, so the whole clue gives "egg", but the clue can also be broken down: e.g., loses its full stops to give eg, followed by the first letter (i.e., the "origin") of the word goose--g--to make egg.