Mail slots
Pillar boxes and mail slots are semantically related. In some cases you can use "Pillar boxes" instead a noun phrase "Mail slots".
Pillar boxes
Mail slots and pillar boxes are semantically related. You can use "Mail slots" instead a noun phrase "Pillar boxes".
Mutual synonyms
Cite this Source
Pillar boxes and Mail slots. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/mail_slots/pillar_boxes
Mail slots & Pillar boxes. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/mail_slots/pillar_boxes>.
Pillar boxes or Mail slots. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/mail_slots/pillar_boxes.
Google Ngram Viewer shows how "mail slots" and "pillar boxes" have occurred on timeline