roll in verb4 •To arrive casually at a place.He rolled in five minutes late, without even saying sorry. •To come in an unstoppable flow.The money keeps on rolling in.The clouds rolled in and it soon began to rain. •To come in (to a station, yard). (e.g. of a train) •To pot with minimal force.He rolled the red in dead weight, and now he's nicely on the blue. formsrolled in · rolling in · rolls in