1. One is nurturing something. 2. One is celebrating something.
To dream of a sprinkler spraying on a lawn or garden predicts pleasant new friends and social occasions in your future. If the sprinkler was used on a fire, or inside a building, it forecasts an exciting new love affair, or satisfaction in your current love relationship.
(Water sprinkler) In a dream, a sprinkler means rejuvenation, renewal of life, revival of old practices, or extinguishing a fire.