glossary: add cask

content/reference/glossary/cask.md

@@ -0,0 +1,14 @@
++++
+title = "Cask"
+
+[extra]
+category = "hoon-nock"
++++
+
+A **cask** is a [cell](/reference/glossary/cell) whose head is a
+[mark](/reference/glossary/mark) and whose tail is a
+[noun](/reference/glossary/noun). It is similar to a `cage` except with a simple
+noun rather than `vase` in the tail. Casks are primarily used by the
+[kernel](/reference/glossary/kernel) for sending data over the
+[Ames](/reference/glossary/ames) network, because `vase`s should only be used
+locally.

lib/glossary.js

@@ -1065,6 +1065,13 @@ export const glossary = [
     slug: "https://developers.urbit.org/reference/glossary/case",
     desc: "A reference to a commit in Clay",
   },
+  {
+    name: "cask",
+    symbol: "",
+    usage: "hoon-nock",
+    slug: "https://developers.urbit.org/reference/glossary/cask",
+    desc: "A cell of a mark and a noun. Similar to a cage but with a simple noun rather than a vase in the tail.",
+  },
   {
     name: "cell",
     symbol: "",