tile breaking (in karate)
A martial arts technique where a practitioner breaks one or more roofing tiles with a hand strike, often demonstrated in karate.
空手の演武で瓦割りを披露した。
He demonstrated tile breaking at the karate performance.
Compound of 瓦 (かわら, 'roof tile') and 割り (わり, 'breaking', the continuative form of 割る).