also: おんばひからかさ
bringing up with overprotective care; pampered upbringing; hothouse atmosphere
Describes raising a child with excessive material comfort and protection, often implying a sheltered, overindulged upbringing. Used as a set phrase, often with に育てられる or similar.
She is a young lady who was brought up in a hothouse atmosphere.
Perhaps because he was raised with overprotective care, he is somewhat naive about the world.