arm out of sleeve
When sleeved clothing articles (shirt, jacket, dress...) are worn but the arm or arms are out of the sleeves.
Use hadanugi dousa with a kimono if the "sleeve" part is strapped to the waist. One arm out of sleeve is called kata-hada while both arms out of sleeves is called moro-hada.
See also
The following tags are aliased to this tag: arm_in_one_sleeve (learn more).