wall wôl/ noun 1. a continuous vertical brick or stone structure that encloses or divides an area of land. "a garden wall" synonyms: barrier, partition, enclosure, screen, panel, divider; More verb 1. enclose (an area) within walls, especially to protect it or lend it some privacy. "housing areas that are walled off from the indigenous population" synonyms: enclose, bound, encircle, confine, hem, close in, shut in, fence in "tenements walled in the courtyard"