"ambulatory" in the noun sense
1. ambulatory
a covered walkway (as in a cloister
"it has an ambulatory and seven chapels"
"ambulatory" in the adjective sense
1. ambulatory
relating to or adapted for walking
"an ambulatory corridor"
2. ambulant, ambulatory
able to walk about
"the patient is ambulatory"
Source: WordNet® (An amazing lexical database of English)
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