jQuery selector first td of each row

I have this stuff:

<table>
  <tr>
    <td>nonono</td> <!-- FIND THIS -->
    </td>foobar</td>
  </tr>
  <tr>
    <td>nonono2</td> <!-- FIND THIS -->
    </td>foobar2</td>
  </tr>
  <tr>
    <td>nonono3</td> <!-- FIND THIS -->
    </td>foobar2</td>
  </tr>
</table>

I have tried with $('td:first') with no luck;

Expected return: <td>nonono</td>, <td>nonon2</td> and <td>nonon3</td>

Thanks in advance!