ornamental hairpin
楴 centers on an ornamental hairpin, a decorative object used to style or secure hair.
楴 combines 木 (wood) with 帝, which likely contributes the sound テイ. The character likely originally referred to a wooden hairpin or a hairpin made from a plant material.
The left side 木 suggests wood, and the right side 帝 looks like an elaborate ornament. Picture a beautifully carved wooden hairpin, with the 帝 part representing its decorative top.
For テイ, imagine a tailor (テイ) using an ornamental hairpin to fasten a delicate fabric: tailor -> テイ, and the hairpin holds everything in place.
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