adjective
1. : protected from competition especially from abroad
sheltered trades
a sheltered industry
sheltered domestic markets
2. : protected from risks or from burdens (as taxes)
a tax- sheltered investment in municipal bonds
3. : providing a noncompetitive environment for the useful occupation and training of persons (as the physically disabled, the aged, or emotionally disturbed or handicapped children) in order to promote their adjustment and rehabilitation
sheltered workshop
sheltered employment