fuse² v [I,T] 1 to join together and become one thing, or to join two things together 结合; 合并: The bones of the spine had become fused together. 脊椎骨已经接合在一起了。 2BrE if an electrical system fuses, or if you fuse it, it stops working because the fuse has melted 【英】 （使）因保险丝烧断而中断工作: The lights had fused. 电灯因保险丝烧断而熄灭了。