棺材板

1. • wooden board used to make a coffin (also refers to the coffin itself) (fig.) (of a facial expression) grim unsmiling
2. • coffin bread, a Taiwanese snack consisting of a thick slab of bread, fried or toasted, then hollowed out, filled with a thick stew, and capped with a "coffin lid" (slice of fried bread)

Character by character

• 棺(guān)coffin
• 材(cai)material
• 板(bǎn)board