窃せっちゃりMeanings1nounbicycle theftSlang term for stealing a bicycle. Often used in news reports or casual conversation about bike theft.駅えき前まえで窃せっちゃりが多た発はつしている。Bicycle thefts are occurring frequently in front of the station.窃せっちゃり犯はんが捕つかまった。A bicycle thief was caught.