Roll in

To arrive in great numbers or quantity.The money has been rolling in since we started the new business.

Roll back (a price)

To reduce a price to a previous amount.The prices at the computer store were rolled back during the big sale.

Roll around

To return at a regular or usual time, to come back.Every time that my birthday rolls around I have a big party.

Ring a bell

To remind someone of something.The name does not ring a bell and I am sure that I have never heard of the man.

Right up (someone’s) alley

To be ideally suited to someone's interests or abilities.Working with numbers is right up my alley.

Right under one`s nose

To be in an obvious or nearby place.I found the calculator right under my nose after searching for it for an hour.

Right side up

With the correct side upwards.The bus drove off the highway and rolled over but it landed right side up when it stopped.

Right out

To say or tell something plainly or in a way that hides nothing.I told the new supervisor right out that I did not like him.

Right on time

To be exactly at the correct time.The train arrived at the station right on time.

Right on

That`s right, yes (indicates approval for something) .The man yelled "right on" every time the politician promised to lower taxes.