FERRO-CONCRETE n.
Concrete strengthened by a core or foundation skeleton 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.
FINGER n.
. See Crab grass, under Crab. -- Finger nut, a fly nut or thumb nut. -- Finger plate, a strip of metal, glass, etc., to protect a painted or polished door from finger marks. -- Finger post, a guide post bearing an index finger. -- Finger reading, reading printed in relief so as to be sensible to the touch; -- so ma…