Guardrail
Handrail, Bannister
noun
らんかん
観覧 （かんらん） Viewing, Watching, Seeing
欄干 （らんかん） Guardrail, Handrail, Bannister
Lan らん can かん sneak under Guardrails undetected.
Lan らん can かん grind down Guardrails on inline skates.