joist /dʒɔɪst/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: giste , from Latin jacere 'to lie' ]
one of the beams that support a floor or ceiling
joist /dʒɔɪst/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: giste , from Latin jacere 'to lie' ]
one of the beams that support a floor or ceiling
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012