FERRO-CONCRETE n.
leton of iron or steel bars, strips, etc. Floors, columns, piles, water pipes, etc., have been successfully made of it. Called also armored concrete steel, and reënforced concrete.
FLAT a.
, with a flat, thin head, larger than a tack. Knight. -- Flat paper, paper which has not been folded. -- Flat rail, a railroad rail consisting of a simple flat bar spiked to a longitudinal sleeper. -- Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Raym…
FLOSS n.
Untwisted filaments of silk, used in embroidering. Floss silk, silk that has been twisted, and which retains its loose and downy character. It is much used in embroidery. Called also floxed silk. -- Floss thread, a kind of soft flaxen yarn or thread, used for embroidery; -- called also linen floss, and floss yarn. McE…