In a draughty manner.

That prevents the entry of draughts.

To seal an opening, so as to prevent the entry of draughts.

plural of draughtsboard

The board on which draughts is played, resembling a chessboard but (depending on the game variation) often having a side length of ten squares rather than eight.

simple past tense and past participle of draughtproof

The material which is used to make something draughtproof. / The act of making something draughtproof.

present participle of draughtproof

Without draughts (air currents).

plural of draughtman