De or het wondheling?

The correct Dutch article is:

de wondheling

Rule Words ending in -ing: almost always de. See the rule

How to use wondheling

the wondhelingde wondheling
this wondhelingdeze wondheling
that wondhelingdie wondheling
our wondhelingonze wondheling
your wondhelingjouw wondheling
every wondhelingelke wondheling
which wondheling?welke wondheling?
a big wondheling / the big wondhelingeen grote wondheling, de grote wondheling