Definition of Munro-bagging in English:
Munro-bagging
noun mənˈrəʊˌbaɡɪŋmʌnˈrəʊˌbaɡɪŋ
slang The dedicated attempt to climb as many Munro peaks as possible.
Origin
1930s; earliest use found in Journal Scottish Mountaineering Club. From Munro + bagging.