What's next to a feather word above, a white word below and a wooden word?

Have grown two millimeters.

I. Interpretation

Pronunciation 1 [xí]

1, a tree mentioned in ancient books, has hard wood.

2. Wooden components that work together.

Pronunciation 2 [dié]

1, intermediate bolt.

2, the crossbar under the windowsill.

Second, the interpretation of words.

Ancient prose: Muye. From the sound of wood.

Translation: caused by trees. Take wood as the square and learning as the sound side.

Third, the original meaning of coinage

Ancient prose: they are all called mechanical wedges. Not for a wooden name.

Translation: It is the name of a wooden component. Not the name of the tree.

Extended data

Glyph evolution (as shown in figure)

Group words:

First, what? 【jiē xí】?

Add wood and trabecular.

Second, machinery? 【Xièxx】?

Refers to cangue rafters and other instruments of torture.