Meanings

placoderms (extinct fishes of class Placodermi)

signboard depicting scene from a play (usu. outside a theatre)

paiban (clapper made from several flat pieces of wood)

rectifier

score board

springboard

printed circuit board

heat sink

disk herniation

ski

disc-like molecule

there is only the thickness of the boat's planking between one and perdition

top (of a table, counter, etc.)

diploic vein

rupture disk

pronotum

cutting guide board for noodles

particle board

splint

dashboard