約

• Binding and Constraint: Literal binding, tying, or fastening; figuratively used to restrict or limit behavior and movement.
• Agreement and Covenant: A treaty, formal contract, private appointment, or engagement (noun); the act of agreeing, promising, or making an appointment (verb).
• Condensation and Brevity: The act of abbreviating, simplifying, or condensing material; describes speech or writing that is brief yet comprehensive.
• Approximation: When appearing before a number or quantity, functions as an adverb meaning "approximately," "about," or "roughly."

• Verb: Transitive (to bind something; to agree upon something). Can also function as a modal requirement ("it is stipulated/required that...").
• Noun: The result of an agreement, such as a treaty or appointment.
• Adjective/Adverb: Modifies nouns regarding conciseness or quantities regarding approximation.

• 約 vs. 略: While both relate to brevity, 約 typically implies condensing the essence into a tight form, whereas 略 often implies sketching or omitting details.
• Register: The glyph does not distinguish between high-state diplomatic treaties and simple social arrangements; this must be determined by the surrounding register.

• Simplified variant: U+7EA6.

The glyph centers on the act of binding or tying (糸), with secondary meanings deriving from this sense of tension, restriction, and condensation.

• The "Treaty Trap": Avoid defaulting to "agreement" or "covenant" if the syntax is clunky; test the senses of constraint/restriction or condensation/brevity instead.
• Contextual Clues: If the text involves terms of release (e.g., 解, 釋), the primary physical sense of binding is likely active.