Wiktionary
vb. (present participle of pass down English)
Wikipedia
A Passing Down is an American Football term referring to any down that a forward pass is involved or likely to be involved.
Usage examples of "passing down".
The nuns are seen passing down the alley at the back, to say their office): Let them go pray, go pray, when the bell rings!
And after the guests were gone, I learned how he had met him, passing down a street at night and stopping to listen to a man on a soap-box who was addressing a crowd of working men.
President Lincoln was passing down Pennsylvania avenue in Washington one day, when a man came running after him, hailed him, and thrust a bundle of papers in his hands.
The bride, in passing down-stairs, dressed for her journey, found Tom waiting for her - flushed, either with his feelings or the vinous part of the breakfast.
One hot day the previous July, as I was passing down our upstairs hall, I heard a strange voice emanating from Chapter Eleven’.