Sentence:  Groups of citizens—broad-browed Roman colonists and coarse-haired Romanised natives, together with obvious hybrids of the two strains, alike clad in cheap woollen togas—and sprinklings of helmeted legionaries and coarse-mantled, black-bearded tribesmen of the <WSD>circumambient</WSD> Vascones—all thronged the few paved streets and forum; moved by some vague and ill-defined uneasiness. 
Meaning of the word marked with <WSD> tags:  Surrounding.