colonnaded

UK: /ˌkɒləˈneɪdɪd/

WordReference Random House Learner's Dictionary of American English © 2026

col•on•nade /ˌkɑləˈneɪd/   n. [countable]

1. Architecture a series of regularly spaced columns holding up arches.
2. a row of trees, as on each side of a road.

col•on•nad•ed, adj.: 

colonnaded boulevards.

WordReference Random House Unabridged Dictionary of American English © 2026

col•on•nade  (kol′ə nād′), n. 

1. Architecture a series of regularly spaced columns supporting an entablature and usually one side of a roof. Cf. arcade. 
2. a series of trees planted in a long row, as on each side of a driveway or road.

• French, equivalent. to colonne column + -ade -ade¹, on the model of Italian colonnato
• 1710–20

col′on•nad′ed, adj.