thin end of the wedge

listen to the pronunciation of thin end of the wedge
English - Turkish

Definition of thin end of the wedge in English Turkish dictionary

the thin end of the wedge
(deyim) gittikce buyuyen bir davranisin ilk adimi
English - English
Something that if allowed or accepted to a small degree would lead to systematic encroachment

The MP told parliament that legalising cannabis would be the thin end of the wedge.