one-source earnings
nounUK /wʌn sɔːs ˈɜːnɪŋz/
US /wʌn sɔːrs ˈɜːrnɪŋz/
Money you get from just one place, like one job.
His one-source earnings come only from walking dogs.
OTHER MEANINGS
2. Money a company makes from selling just one product.
The toy maker's one-source earnings dropped when the toy stopped selling.
3. Profit that comes from only one customer or client.
Her one-source earnings made her nervous, so she found more clients.
4. Income from a single investment.
His one-source earnings were all from one stock.