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(elisp)Macro Type

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Macro Type
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   A "Lisp macro" is a user-defined construct that extends the Lisp
language.  It is represented as an object much like a function, but with
different argument-passing semantics.  A Lisp macro has the form of a
list whose first element is the symbol `macro' and whose CDR is a Lisp
function object, including the `lambda' symbol.

   Lisp macro objects are usually defined with the built-in `defmacro'
function, but any list that begins with `macro' is a macro as far as
Emacs is concerned.  Note: Macros, for an explanation of how to write
a macro.

   *Warning*: Lisp macros and keyboard macros (Note: Keyboard Macros)
are entirely different things.  When we use the word "macro" without
qualification, we mean a Lisp macro, not a keyboard macro.