Definition of rim-stock in US English:

rim-stock

noun

historical
  • A simple form of calendar, consisting of a block of wood (or less commonly of other material) marked with notches to indicate the days of the week, religious festivals, etc.; a clog-almanac.

Origin

Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer. From a form in a Scandinavian language from the Scandinavian base of Old Icelandic rím + the Scandinavian base of Old Icelandic stokkr. Compare Middle Low German (rare) rīmstok.

Pronunciation

rim-stock

/ˈrɪmstɒk/