A brick or stone that has its longest dimension perpendicular to the face of a wall, especially one that extends through the wall's entire thickness.

The act of perpetrating / Something (such as a crime) that is perpetrated

A license with no expiration date.

plural of perpetration

The condition of being perpendicular.

present participle of perpetrate

Third-person singular simple present indicative form of perpetrate

plural of perpetrator

simple past tense and past participle of perpend

present participle of perpend