资料来源 : Webster's Revised Unabridged Dictionary (1913)
Archangel \Arch`an"gel\, n. [L. archangelus, Gr. 'archa`ggelos:
cf. OF. archangel, F. archange. See {Arch-}, pref., and
{Angel}.]
1. A chief angel; one high in the celestial hierarchy.
--Milton.
2. (Bot.) A term applied to several different species of
plants ({Angelica archangelica}, {Lamium album}, etc.).
{Dead letter}.
(a) A letter which, after lying for a certain fixed time
uncalled for at the post office to which it was
directed, is then sent to the general post office to
be opened.
(b) That which has lost its force or authority; as, the
law has become a dead letter.
{Dead-letter office}, a department of the general post office
where dead letters are examined and disposed of.
{Dead level}, a term applied to a flat country.
{Dead lift}, a direct lift, without assistance from
mechanical advantage, as from levers, pulleys, etc.;
hence, an extreme emergency. ``(As we say) at a dead
lift.'' --Robynson (More's Utopia).
{Dead line} (Mil.), a line drawn within or around a military
prison, to cross which involves for a prisoner the penalty
of being instantly shot.
{Dead load} (Civil Engin.), a constant, motionless load, as
the weight of a structure, in distinction from a moving
load, as a train of cars, or a variable pressure, as of
wind.
{Dead march} (Mus.), a piece of solemn music intended to be
played as an accompaniment to a funeral procession.
{Dead nettle} (Bot.), a harmless plant with leaves like a
nettle ({Lamium album}).
{Dead oil} (Chem.), the heavy oil obtained in the
distillation of coal tar, and containing phenol,
naphthalus, etc.
资料来源 : WordNet®
Lamium album
n : European dead nettle with white flowers [syn: {white dead
nettle}]