Meaning of 腰落着 in Japanese

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Definition of 腰落着

こし(koshi) · コシ(koshi) 【腰】

(n) back; lower back; waist; hips; lumbar region
しばらくこの町に腰を落ちつけようと思う。
I think I'll stay put in this town for a while.
body (of hair, noodle, paper, etc.); resilience; spring

らくちゃく(rakuchaku) 【落着】