Analysis of information sources in references of the Wikipedia article "Rosh mesivta" in English language version.
... ram (for rosh mesivta, 'head of ...
(There was also some talk in the Yeshiva "in those days" about how "the Ram" (as he was often called - standing for Rosh Mesivta) ...
ROSH MESIVTA: the dean of a MESIVTA.
R... next moved to the Telshe yeshiva as a rosh mesivta ... (rosh yeshiva) left the Telshe yeshiva and R... replaced him as rosh yeshiva.
He was previously RAM (Rosh Metivta) at ...