noun, noun or participle which takes 'suru', intransitive verb
sitting on a veranda
Literary or formal term for sitting on the edge of a veranda or porch, often evoking a quiet, traditional scene.
夏の夕方、端居して涼をとる。
On a summer evening, I sit on the veranda to cool off.
縁側 is the veranda itself, while 端居 refers to the act of sitting there.
Compound of 端 (はし, edge) and 居 (い, being/sitting). The exact historical derivation is uncertain, but the spelling is conventionally associated with sitting at the edge of a house.