noun
armrest; elbow rest
A traditional Japanese armrest, often used while sitting on the floor, especially in formal settings like tea ceremonies or by the elderly.
茶室では、正座のときに脇息を使うことがあります。
In a tea room, one may use an armrest when sitting in seiza.
祖母は座るとき、いつも脇息にもたれかかる。
My grandmother always leans on an armrest when she sits.