from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To consider carefully; ponder.
- intransitive v. To be attentive; reflect.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To ponder, consider.
- n. 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
- n. A vertical joint between bricks or blocks in a horizontal course
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To weight carefully in the mind.
- intransitive v. To attend; to be attentive.
from The Century Dictionary and Cyclopedia
- To weigh in the mind; consider attentively.
- To hang down.
- n. In architecture, a long stone reaching through the thickness of a wall so that it is visible on both sides, and is therefore wrought and smoothed at both ends. Now usually called bond-stone, bonder, or through, also perpend-stone, perpent-stone. See cut under ashler.
Latin perpendere : per-, per- + pendere, to weigh; see (s)pen- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin perpendere, from per- + pendere ("to weigh"). (Wiktionary)