Denormalize table and append

How do I denormalize this table

+---------+---------------------------------------------+
|  lemma  |                     definition              |
+---------+---------------------------------------------+
| abandon |        a feeling of emotional intensity     |
| abandon |        forsake                              |
| abandon |        leave behind                         |
| abbey   |        a church associated with a monastery |
| abbey   |        a convent ruled by an abbess         |
+---------+---------------------------------------------+

as

+---------+-------------------------------------------------------------------------------+
|  lemma  |                                      definition                               |
+---------+-------------------------------------------------------------------------------+
| abandon |        a feeling of emotional intensity forsake leave behind                  |
| abbey   |        a church associated with a monastery a convent ruled by an abbess      |
+---------+-------------------------------------------------------------------------------+

What should be the query?