Lewis & Short

ambŭlātĭuncŭla, ae, dim. f. [ambulatio], a short walk (perh. only in the foll. passages of Cic.).

  1. I. Lit., Cic. Fam. 2, 12.
    And,
  2. II. Concr., a small place for walking: tecta, Cic. Att. 13, 29.