Rucked means to gather something up so that it forms wrinkles or folds.
Rucked can make people think of messy or untidy things.
Examples:
She rucked up her sleeves to wash her hands.
The wind rucked the papers on the desk.
The blanket rucked up at the end of the bed.
The dog rucked up the rug when it ran through the room.
The storm rucked up the sand on the beach.
He rucked up his homework and had to smooth it out again.