腕うで枕まくら

noun, noun or participle which takes 'suru'

using one's arm as a pillow

Refers to the act of resting one's head on another person's arm, or using one's own arm as a pillow. Often used in romantic or intimate contexts.

• 彼かの女じょは彼かれの腕うで枕まくらで眠ねむってしまった。

  She fell asleep using his arm as a pillow.

• 腕うで枕まくらをすると、腕うでがしびれることがある。

  When you use your arm as a pillow, it sometimes goes numb.