JOIST


Meaning of JOIST in English

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.