Meanings

surface of a board (shogi, go, etc.)

hard-to-penetrate event

partitioned into squares

land subsidence

magnetic compass

roban

large rock

roadbed

glasses and plates

imported disk (record, blu-ray, game, etc.)

recording disc (of the Imperial surrender message)

liquid crystal (display) panel

control board

turret lathe

buffing machine

broaching machine

capital base

revenue base

telecommunications infrastructure

phonograph record