HERALD n. 2 definitions
In the Middle Ages, the officer charged with the above duties, and also with the care of genealogies, of the rights and privileges of noble families, and especially of armorial bearings. In modern times, some vestiges of this office remain, especially in England. See Heralds' College (below), and King-at-Arms.…
HOOP n.
four pecks. [Eng.] Halliwell. Bulge hoop, Chine hoop, Quarter hoop, the hoop nearest the middle of a cask, that nearest the end, and the intermediate hoop between these two, respectively. -- Flat hoop, a wooden hoop dressed flat on both sides. -- Half-round hoop, a wooden hoop left rounding and undressed on the outs…
HYDRAZINE n.
yl hydrazine, etc. They are derivatives of hydrazine proper, H2N.NH2, which is a doubled amido group, recently (1887) isolated as a stable, colorless gas, with a peculiar, irritating odor. As a base it forms distinct salts. Called also diamide, amidogen, (or more properly diamidogen), etc.