Κleidi (Greek: Κλειδί, before 1926: Τσέροβον – Tserovon;[2] Bulgarian: Церово, Tserovo or Tzerovo) is a village in the municipality of Amyntaio, in the Florina regional unit of West Macedonia, Greece.

In 1845 the Russian slavist Victor Grigorovich recorded Tsrevo as mainly Bulgarian village.

[3] In the book “Ethnographie des Vilayets d'Adrianople, de Monastir et de Salonique”, published in Constantinople in 1878, that reflects the statistics of the male population in 1873, Tzerovo was noted as a village with 30 households and 76 male Bulgarian inhabitants.

[4] According to the statistics of Geographers Dimitri Mishev and D. M. Brancoff, the village had a total Christian population of 400 in 1905, consisting of 200 Exarchist Bulgarians and 200 Patriarchist Bulgarians (Grecomans).

[5] This Western Macedonia location article is a stub.