diff --git a/docs/alpha/glossary.rst b/docs/alpha/glossary.rst
index 14b47be8a6b14d25974d2c52cd5570e9fa244369..e4e5b683747c306a7a2cbd07656f1d3923ea83ab 100644
--- a/docs/alpha/glossary.rst
+++ b/docs/alpha/glossary.rst
@@ -313,6 +313,12 @@ _`Stake`
     it. However, there are cases when this is not the case, see
     :ref:`here<active_stake_alpha>` for details.
 
+_`Staker`
+    An `implicit account`_ that made a security deposit.
+    The implicit account must have set a delegate.
+    The security deposit accrues to the stake of the implicit account's delegate and is
+    subject to slashing in case the delegate misbehaves -- see :ref:`Slashing<slashing_alpha>`.
+
 _`Transaction`
     An operation_ to transfer tez between two accounts, or to run the code of a
     `smart contract`_.
diff --git a/docs/paris/glossary.rst b/docs/paris/glossary.rst
index 4943cb645754719d84d4c6840d5e2aa2930c7697..5b8785a36af103a35a5409584628a996201528cd 100644
--- a/docs/paris/glossary.rst
+++ b/docs/paris/glossary.rst
@@ -313,7 +313,13 @@ _`Stake`
     it. However, there are cases when this is not the case, see
     :ref:`here<active_stake_paris>` for details.
 
-_`Transaction`
+_`Staker`
+    An `implicit account`_ that made a security deposit.
+    The implicit account must have set a delegate.
+    The security deposit accrues to the stake of the implicit account's delegate and is
+    subject to slashing in case the delegate misbehaves -- see :ref:`Slashing<slashing_paris>`.
+
+ _`Transaction`
     An operation_ to transfer tez between two accounts, or to run the code of a
     `smart contract`_.