Strimsy.word

The final note rang out, clear as a bell in a silent chapel. Then, the wing dissolved into a puff of silver dust that settled on the counter like a sigh.

Based on my search,

The strimsy wing shivered. A single note, high and sweet and utterly alone, bled out of its shimmering surface. It was the ghost of the lullaby’s first breath. strimsy.word

Here is a breakdown of what "Strimsy" and "Word" likely refer to in this context, and how they might fit together: The final note rang out, clear as a bell in a silent chapel