苞

• Noun: A flower bud; the protective sheath or husk surrounding a seed or bloom. May refer specifically to a variety of rush.
• Verb: To form a bud; to wrap or envelop (botanically); to burst forth or unfold from a closed state.
• Attributive: Firm, enduring, or tight.

• Contrast with 芽 (//yá//, sprout): While both relate to early plant growth, 苞 emphasizes the envelope and the latent potential of the closed form; 芽 emphasizes the active upward growth of the shoot.
• Semantic Shift: The glyph can function as both a static description (the bud) and a dynamic action (the act of bursting forth).

Composed of 艹 (grass/plant) and 包 (wrap/enclose), reflecting the botanical nature of a wrapped or enclosed bud.

In non-botanical contexts, look for metaphors of latent potential or protective enclosure. While "firm" and "enduring" are recognized senses, these should be weighed against the immediate physical imagery of a closed bud within the passage.