splint
noun [ C ] uk/splɪnt/ us/splɪnt/
（固定断骨的）夹板
a long, flat object used as a support for a broken bone so that the bone stays in a particular position while it heals
The doctor put a splint on the arm and bandaged it up. 医生给胳膊上了夹板，并用绷带包扎固定。