Tumble dry mean set the dryer temperatures on "low" or "delicate" whichever one on your machines means less temp. Wash separately means your fabric may run colors so make certain it is washed with items of the same or very similar colors. Don't wash with anything white or light colored as the color will run onto the lighter fabric. Also wash separately may indicate the fabric is delicate and should be washed on "delicate"......a slower agitation of the machine. Good for you for reading the care instructions!