eaves; edge of the eaves
Refers to the overhanging lower edge of a roof, often where rainwater drips off. Used in both everyday and literary contexts.
Raindrops are falling from the edge of the eaves.
A swallow built a nest under the eaves.
Compound of 軒 (のき, 'eaves') and 端 (は, 'edge'), with rendaku voicing of は to ば.