noun
Affectionate term for one's mother, commonly used until the end of the Meiji period. Now somewhat old-fashioned but still understood.
See also: おかあさん
おっかさん、今日の夕飯は何?
Mom, what's for dinner tonight?
昔の小説では、子供が「おっかさん」と呼ぶ場面がよく出てくる。
In old novels, scenes where children call out 'okkaasan' appear often.