How to check if a string is in the english dictionary?

<p>Is there some way to reference an english dictionary and check if a string is in it?</p> <hr/>**评论：**<br/><br/>Xeoncross: <pre><p>Mac:</p> <pre><code>$ grep --color=always &#34;gopher&#34; /usr/share/dict/words </code></pre> <p>Ubuntu Linux:</p> <pre><code>$ sudo apt-get install --reinstall wamerican $ grep --color=always &#34;gopher&#34; /usr/share/dict/words </code></pre></pre>ice99king: <pre><p>Know about windows too by any chance ;)?</p></pre>Xeoncross: <pre><p>What&#39;s windows?</p></pre>jrwren: <pre><p>I think its some kind of spyware?</p></pre>