- a windowed porch or porchlike room having more window than wall area, intended to receive large amounts of sunlight.
- an open pen, raised above the ground, for giving poultry light and air under sanitary conditions.
Origin of sun porch
An Americanism dating back to 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018