Add define-word package

Introduction: http://oremacs.com/2015/05/22/define-word/

doc/DOCUMENTATION.org

@@ -1853,6 +1853,7 @@ Text related commands (start with ~x~):
     | ~SPC x t l~ | swap (transpose) the current line with the previous one       |
     | ~SPC x w c~ | count the number of words in the selection region             |
     | ~SPC x w C~ | count the number of occurrences per word in the select region |
+    | ~SPC x w d~ | show dictionary entry of word from wordnik.com                |
 
 *** Smartparens Strict mode
 [[https://github.com/Fuco1/smartparens][Smartparens]] comes with a strict mode which prevents deletion of parenthesis if

spacemacs/packages.el

@@ -23,6 +23,7 @@
         bookmark
         buffer-move
         clean-aindent-mode
+        define-word
         desktop
         diminish
         doc-view
@@ -432,6 +433,13 @@
       (setq desktop-dirname spacemacs-cache-directory)
       (push spacemacs-cache-directory desktop-path))))
 
+(defun spacemacs/init-define-word ()
+  (use-package define-word
+    :defer t
+    :init
+    (evil-leader/set-key
+      "xwd" 'define-word-at-point)))
+
 (defun spacemacs/init-diminish ()
   (require 'diminish)
   ;; Minor modes abbrev --------------------------------------------------------