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+- a [[token]].
+  - Part of [[OAuth 2.0]].
+  - From [[rfc6750]] ~ https://datatracker.ietf.org/doc/html/rfc6750:
+
+```
+1.2.  Terminology
+
+   Bearer Token
+      A security token with the property that any party in possession of
+      the token (a "bearer") can use the token in any way that any other
+      party in possession of it can.  Using a bearer token does not
+      require a bearer to prove possession of cryptographic key material
+      (proof-of-possession).
+
+   All other terms are as defined in "The OAuth 2.0 Authorization
+   Framework" [RFC6749].
+```
+