盤層 is read as ばんそう (bansou) and means pan.
ばんそう
bansou
てつばんそう
iron pan
こうばんそう
hardpan
ばん
board (in shogi, go, chess, etc.)
ばんめん
surface of a record
ばんじゃく
huge rock
ばんじょう
on the board (shogi, go, etc.)
ばんしきちょう
banshiki mode (one of the six main gagaku modes)
ばんがい
off the board (go, shogi, etc.)
まるえり
round collar (of traditional Japanese clothing)
ばんだい
oval tub or tray used in fish shops
ばんかつ
discoidal cleavage
ばんすごろく
ban-sugoroku