year of good harvest; fruitful year
Refers to a year when crops are abundant. Often used in agricultural or celebratory contexts.
今年は出来年で、米がたくさんとれた。
This year was a good harvest year, and we got a lot of rice.
Compound of 出来 (deki, 'result, outcome') and 年 (toshi, 'year'). The reading できどし is a rendaku form.