return-from

(return-from name [value])

Returns value (default nil) from the enclosing function, ending its execution early. The block name is ignored — there are no named blocks — so inside a defun or lambda body every return-from exits the function itself. Deviation from Common Lisp: a return-from nested inside a do/loop exits that loop (the nearest block) instead of the function, which is only equivalent when the loop is the function's final form; block itself is not supported.