joist
UK: dʒɔɪst | US: dʒɔɪst
n. A horizontal structural member (typically made of wood or steel) used to support floors or ceilings.
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The word "joist" originates from Old French "giste" (meaning "beam" or "support"), derived from Latin "jacēre" (to lie down). Over time, the spelling and pronunciation evolved in Middle English to "joist," reflecting its role as a horizontal support structure. The word’s history ties logically to its function—a beam that "lies" horizontally to bear weight.
The carpenter installed sturdy wooden joists to reinforce the floor.
Steel joists are often used in modern construction for added durability.
A cracked joist can compromise the stability of the entire building.
The inspector checked the joists for signs of termite damage.
They replaced the old joists with treated lumber to prevent rot.