ful ‧ crum /ˈfʊlkrəm, ˈfʌl-/ BrE AmE noun ( plural fulcrums or fulcra /-krə/) [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: 'bedpost' ]
the point on which a ↑ lever (=bar) turns, balances, or is supported in turning or lifting something
ful ‧ crum /ˈfʊlkrəm, ˈfʌl-/ BrE AmE noun ( plural fulcrums or fulcra /-krə/) [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: 'bedpost' ]
the point on which a ↑ lever (=bar) turns, balances, or is supported in turning or lifting something
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012