打ち抜き

I

うちぬき【打ち抜き】

1 〔型を抜くこと〕 punching; 【工】 die cutting; blanking.

2 〔仕切りを取り払うこと〕 taking away [removing] 《a partition [wall] between rooms》. [＝ぶちぬき]

●打ち抜きのふた間 a double room knocked into one; two rooms thrown together.

3 〔井戸〕 an artesian well. [＝ほりぬきいど]

打ち抜き型 a blanking die.

打ち抜き機 a punching machine; a punch and die.

II

ぶちぬき【打ち抜き】

removing [knocking down] a partition [wall].

●六畳と八畳がぶち抜きになっている. The six-mat room and the eight-mat room have been joined together.