Dutch word tweeluik comes from Dutch twee (Two Two.), Dutch luik

Detailed word origin of tweeluik

Dictionary entry	Language	Definition
twee	Dutch (nld)	Two Two.
luik	Dutch (nld)	(arts) panel, as in a triptych. (figuratively) first-rank section, part (of few), e.g. chapter of a plan. Hatch. Shutter.
tweeluik	Dutch (nld)	(arts) diptych. (figuratively) something in two (complementary) parts.

Words with the same origin as tweeluik