perpend UK /pəˈpɛnd/US /pɚˈpɛnd/noun 2verb 1forms 3 noun2 •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. •A vertical joint (usually mortar) between bricks or blocks in a horizontal course. verb1 •(no longer used) To ponder, consider.[…] Perpend, / I have a daughter - have while she is mine […] — 1599 formsperpended · perpending · perpends