smother

verb (used with object)

1. to stifle or suffocate, as by smoke or other means of preventing free breathing.
2. to extinguish or deaden (fire, coals, etc.) by covering so as to exclude air.
3. to cover closely or thickly; envelop: to smother a steak with mushrooms.
4. to suppress or repress: to smother feelings.
5. Cookery. to steam (food) slowly in a heavy, tightly closed vessel with a minimum of liquid: smothered chicken and onions.