rain shower(n = noun.phenomenon) shower - a brief period of precipitation; "the game was interrupted by a brief shower"
is a kind of rain, rainfall
has particulars: scattering, sprinkle, sprinkling

acid rain, golden rain, golden shower tree, meteor shower, pink shower, pink shower tree, rain, rain barrel, rain buckets, rain cats and dogs, rain check, rain cloud, rain dance, rain date, rain down, rain forest, rain gage, rain gauge, rain out, rain shadow, rain stick, rain tree, rainbow shower, shower, shower bath, shower cap, shower curtain, shower down, shower room, shower stall, temperate rain forest, tropical rain forest