noun
tiered doll stand (for hina dolls)
Specifically the red-carpeted, stepped display for 雛人形 (hina dolls) during the Hinamatsuri festival.
See also: 雛人形
ひな祭りには、ひな壇に雛人形を飾ります。
For Hinamatsuri, we display hina dolls on the tiered doll stand.
noun
tiered platform;
Any stepped or tiered structure, such as seating in a hall, a display shelf, or a stage with multiple levels.
式典では、来賓がひな壇に座った。
At the ceremony, the guests of honor sat on the tiered platform.
合唱コンクールで、ひな壇に並んで歌った。
At the choir competition, we stood on the tiered stage and sang.
Compound of ひな (hina, referring to the dolls or the festival) and 壇 (だん, 'platform' or 'stage'). The spelling 段 is also used for 'step' or 'tier'.