索

• Noun: A physical rope, cord, or cable; abstractly, the rules, laws, or regulations that serve as the "bindings" of a system.
• Verb: To seek, probe, or search for something lost, unknown, or hidden; to demand or exact (e.g., payment of a debt or a response).
• Rare: Isolated.

• vs 尋 (xún): Both mean "search," but 尋 tends toward a systematic search, whereas 索 often implies a deeper probe or more urgent demand.
• vs 求 (qiú): Both involve asking for something; however, 求 is typically a request or plea, while 索 carries the tension of an exaction.

Historically, the reading /suǒ/ generally aligns with noun usage (rope, law) and /suò/ with verb usage (search, demand).

The glyph originates from the image of a rope or cable.

The meaning "isolated" is infrequent and should only be considered if the surrounding context strongly supports solitude or separation.