| Lemon zest source |
| Comfort-food source |
| A primary source for Scandinavian mythology |
| Adams apple source |
| Composite Index source |
| Avian sources of red meat |
| A source of aluminum |
| Andean wool sources |
| Agent's information source |
| Resource for working parents |
| A source of mother-of-pearl |
| Disreputable source |
| Mobile source of criticism |
| All I'm saying is . . ." online |
| U.S.'s most abundant energy source |
| Accumulated resources. |
| Subterranean sugar source |
| As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one," for one |
| Adjustable light source |
| Source of the meteors in a meteor shower |
| A source of mistakes |
| Breakfast fiber source |
| Online tracker |
| A Mississippi source |
| Online site for people to communicate on particular topics |
| Reliable source of income |
| Liquid resources |
| Online user's self-image |
| Cider source |
| ___ Academy (online course giant) |