abbr.

1. = programmable read-only memory 可编程序的只读存储器

n.

1. 【英】【口】（听众可任意走动的）逍遥音乐会
2. 【英】海滨散步道
3. 【美】【口】（学校的）班级舞会

n.

1. Brit. short for promenade (in sense ¹).
2. (also Prom) Brit. a promenade concert.
3. N. Amer. a formal dance, especially one at a high school or college.