| Billion: Prefix | 15 |
| Billion-year time period | 24 |
| Billion-year stretch | 20 |
| Billion-year span | 17 |
| Billion-year periods | 20 |
| Billion-year period | 19 |
| Billion-year increments, in geology | 35 |
| Billion-year increments | 23 |
| Billion-selling cookies | 23 |
| Billion-selling cookie | 22 |
| Billion-dollar seller | 21 |
| Billion years, to a geologist | 29 |
| Billion years, easily | 21 |
| Billion years (Var.) | 20 |
| Billion years | 13 |
| Billion suffix | 14 |
| Billion or million attachment | 29 |
| Billion follower | 16 |
| Billion extension | 17 |
| Billion chaser | 14 |
| Billion add-on | 14 |
| Billion : giga- :: trillion : ___ | 33 |
| Billion : giga- :: trillion : -- | 32 |
| Billion (prefix) | 16 |
| Billion (Pref.) | 15 |
| Billingsgate | 12 |
| Billings-to-Denver dir. | 23 |
| Billings-to-Bismarck dir. | 25 |
| Billings setting | 16 |
| Billings or Golden | 18 |
| Billings hrs. | 13 |
| Billings home: Abbr. | 20 |
| Billings | 8 |
| Billing's partner | 21 |
| Billing word | 12 |
| Billing units: Abbr. | 20 |
| Billing units | 13 |
| Billing unit, often | 19 |
| Billing unit, for some | 22 |
| Billing unit | 12 |
| Billing time: Abbr. | 19 |
| Billing period, often | 21 |
| Billing period | 14 |
| Billing option, briefly | 23 |
| Billing option that favors purchasing individual items rather than packages | 75 |
| Billing nos. | 12 |
| Billing no. | 11 |
| Billing method: Abbr. | 21 |
| Billing matters | 15 |
| Billing information | 19 |
| Billing info | 12 |
| Billing for backward rats | 25 |
| Billing fig. | 12 |
| Billing date | 12 |
| Billing cycle, often | 20 |
| Billing cycle | 13 |
| Billing abbr. | 13 |
| Billina, in the Oz tales | 24 |
| Billina in the Oz tales | 23 |
| Billiken | 8 |
| Billies and nannies | 19 |
| Billie, to fans | 15 |
| Billie ___ King | 15 |
| Billie who played Glinda | 24 |
| Billie who played a good witch | 30 |
| Billie Sol ___ | 14 |
| Billie Letts' book | 22 |
| Billie Joe's song | 21 |
| Billie Joe creator Gentry | 25 |
| Billie Jean, so to speak | 24 |
| Billie Jean King won it in 1972 | 31 |
| Billie Holiday's real first name | 36 |
| Billie Holiday's "___ Funny That Way" | 51 |
| Billie Holiday's "You Can't Be Mine (And Someone ___ Too)" | 76 |
| Billie Holiday's ''Me, Myself ___'' | 55 |
| Billie Holiday specialties | 26 |
| Billie Holiday portrayer | 24 |
| Billie Holiday contemporary | 27 |
| Billie Holiday classic? | 23 |
| Billie Burke's showman hubby | 32 |
| Billie -- King | 14 |
| Billiards word | 14 |
| Billiards variation with 15 red balls | 37 |
| Billiards variation | 19 |
| Billiards trick shot | 20 |
| Billiards triangle | 18 |
| Billiards tool | 14 |
| Billiards targets | 17 |
| Billiards table material | 24 |
| Billiards surface | 17 |
| Billiards stroke for sharks | 27 |
| Billiards stroke | 16 |
| Billiards sticks | 16 |
| Billiards stick | 15 |
| Billiards shot concern | 22 |
| Billiards shot | 14 |
| Billiards rod | 13 |
| Billiards ritual | 16 |
| Billiards relative | 18 |
| Billiards rebound | 17 |