邏

A phono-semantic compound composed of:

辵 — semantic component, meaning “to walk; movement”;

羅 — phonetic component indicating the sound (라 / luó). The character conveys the idea of moving around to inspect or guard an area, leading to the meaning patrol.
Semantic development: - to move around - to inspect or guard - to patrol

순라 (巡邏) — patrol; making rounds

순라자 (巡邏者) — patrol officer

邏 is used in both military and police contexts for patrolling. The character also appears in 邏輯 (logic), where the meaning evolved metaphorically to reasoning and structured thought.
Related characters: 巡 — to patrol; to go around

察 — to inspect

羅 — to spread; to gather (phonetic component)