diff --git a/src/data/List.js b/src/data/List.js
index 60aed58e1ec6097677f73d73c307bef161b01e86..b19aa196e68e9352eb16c92b91ffc2cdac8a37bd 100644
--- a/src/data/List.js
+++ b/src/data/List.js
@@ -313,7 +313,7 @@ listProto.type = 'list';
 listProto.hasItemOption = true;
 
 /**
- * The means of the input parameter `dim`:
+ * The meanings of the input parameter `dim`:
  *
  * + If dim is a number (e.g., `1`), it means the index of the dimension.
  *   For example, `getDimension(0)` will return 'x' or 'lng' or 'radius'.