1) Add-on for million 2) After a million 3) After million before dale 4) Aire river 5) Aisne tributary 6) Big bucks suffix 7) Billion add-on 8) Billion chaser 9) Billion ender 10) Billion extension 11) Billion follower 12) Billion or million attachment 13) Billion suffix 14) Billion terminal 15) British river Found on https://www.crosswordclues.com/clue/aire
[Aisne] The Aire is a river in northern France, right tributary of the Aisne. Its source is near the village Saint-Aubin-sur-Aire. Its course crosses the départements of Meuse and Ardennes. It flows through the towns of Pierrefitte-sur-Aire, Clermont-en-Argonne, Varennes-en-Argonne and Grandpré, finally flowing into the Aisne in Termes. .... Found on http://en.wikipedia.org/wiki/Aire_(Aisne)