(こくばんけ)

こくばんけし
noun
blackboard eraser
1. blackboard eraser; chalkboard eraser
A felt-padded tool used to wipe chalk from a blackboard. A standard item in Japanese classrooms.
黒板消(こくばんけ)しで()してください。
Please erase it with the blackboard eraser.
黒板消(こくばんけ)しが(よご)れていて綺麗(きれい)()せない。
The eraser is dirty and I can't erase the board cleanly.
日直(にっちょく)仕事(しごと)黒板消(こくばんけ)しを(たた)いてチョークの(こな)()とすことだった。
The daily duty student's job was to clap the blackboard erasers together to knock out the chalk dust.

Compound of 黒板(こくばん) (blackboard) + ()し (eraser, from ()す 'to erase'). A familiar item in Japanese schools where chalkboards are still widely used.

COMMON COLLOCATIONS:

  • 黒板消(こくばんけ)しで()す: to erase with a blackboard eraser
  • 黒板消(こくばんけ)しを(たた)く: to clap erasers (to clean them)
  • 黒板消(こくばんけ)しクリーナー: eraser cleaning machine

CULTURAL NOTE:
In Japanese schools, students take turns as 日直(にっちょく) (daily duty student), and one common task is cleaning the blackboard erasers by clapping them together outdoors. This is a widely shared memory of school life. As a prank, students sometimes balance a 黒板消(こくばんけ)し on top of a partially open door so it falls on whoever enters.

SIMILAR WORDS:

  • ()しゴム: rubber eraser (for pencil) — for paper, not blackboards
  • 黒板(こくばん): blackboard — the board itself
  • ホワイトボードマーカー()し: whiteboard eraser — for whiteboards, not chalkboards