HB
abbreviation
1- half board.
1.1
- （亦作hb）hardback.同HARDBACK.
1.2
- hard black (used in describ-ing a medium grade of pencil lead)硬黑（指中等硬度的铅笔芯）。
1.3
- the political wing of the Basque separatist organization ETA西班牙巴斯克人分离主义组织“埃塔”的政治团体。
- ORIGIN: abbreviation of Basque Herri Batasuna 'United People'.