a senior student at an English public school who is given authority over other students.

Also prepositor, prepostor.

Origin of praepostor

From the Medieval Latin word praepositor, dating back to 1510–20. See prae-, posit, -tor
Related formsprae·pos·to·ri·al [pree-po-stawr-ee-uh l, -stohr-] /ˌpri pɒˈstɔr i əl, -ˈstoʊr-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for praepostor

Historical Examples of praepostor