De or het trielje?

The correct Dutch article is:

het trielje

Rule Diminutives (-je, -tje, -pje): always het. See the rule
Meaning (Dutch) glanzende stof (gemaakt van linnen of katoen)

How to use trielje

the trieljehet trielje
this trieljedit trielje
that trieljedat trielje
our trieljeons trielje
your trieljejouw trielje
every trieljeelk trielje
which trielje?welk trielje?
a big trielje / the big trieljeeen groot trielje, het grote trielje

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).