also: おんだく
noun
Refers to a favor, benefit, or blessing received from someone, often with a nuance of gratitude. Slightly formal or literary.
彼の恩沢に浴して、私はここまで来られた。
Thanks to his favor, I have been able to come this far.
自然の恩沢に感謝する。
I am grateful for the blessings of nature.
Obsolete reading; it is out-dated or obsolete kana usage.
恩恵 is more common and neutral for 'benefit' or 'blessing'. 恩沢 is more literary and emphasizes a favor received from a person or higher power.
Compound of 恩 (favor, kindness) and 沢 (blessing, benefit). The exact historical derivation is uncertain, but the kanji combination conveys the idea of a generous favor or benefit.