Hypertext Webster Gateway: "blackjack"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Oak \Oak\ ([=o]k), n. [OE. oke, ok, ak, AS. [=a]c; akin to D.
eik, G. eiche, OHG. eih, Icel. eik, Sw. ek, Dan. eeg.]
1. (Bot.) Any tree or shrub of the genus {Quercus}. The oaks
have alternate leaves, often variously lobed, and
staminate flowers in catkins. The fruit is a smooth nut,
called an {acorn}, which is more or less inclosed in a
scaly involucre called the cup or cupule. There are now
recognized about three hundred species, of which nearly
fifty occur in the United States, the rest in Europe,
Asia, and the other parts of North America, a very few
barely reaching the northern parts of South America and
Africa. Many of the oaks form forest trees of grand
proportions and live many centuries. The wood is usually
hard and tough, and provided with conspicuous medullary
rays, forming the silver grain.
2. The strong wood or timber of the oak.
Note: Among the true oaks in America are:
{Barren oak}, or
{Black-jack}, {Q. nigra}.
{Basket oak}, {Q. Michauxii}.
{Black oak}, {Q. tinctoria}; -- called also {yellow} or
{quercitron oak}.
{Bur oak} (see under {Bur}.), {Q. macrocarpa}; -- called also
{over-cup} or {mossy-cup oak}.
{Chestnut oak}, {Q. Prinus} and {Q. densiflora}.
{Chinquapin oak} (see under {Chinquapin}), {Q. prinoides}.
{Coast live oak}, {Q. agrifolia}, of California; -- also
called {enceno}.
{Live oak} (see under {Live}), {Q. virens}, the best of all
for shipbuilding; also, {Q. Chrysolepis}, of California.
{Pin oak}. Same as {Swamp oak}.
{Post oak}, {Q. obtusifolia}.
{Red oak}, {Q. rubra}.
{Scarlet oak}, {Q. coccinea}.
{Scrub oak}, {Q. ilicifolia}, {Q. undulata}, etc.
{Shingle oak}, {Q. imbricaria}.
{Spanish oak}, {Q. falcata}.
{Swamp Spanish oak}, or
{Pin oak}, {Q. palustris}.
{Swamp white oak}, {Q. bicolor}.
{Water oak}, {Q. aguatica}.
{Water white oak}, {Q. lyrata}.
{Willow oak}, {Q. Phellos}. Among the true oaks in Europe
are:
{Bitter oak}, or
{Turkey oak}, {Q. Cerris} (see {Cerris}).
{Cork oak}, {Q. Suber}.
{English white oak}, {Q. Robur}.
{Evergreen oak},
{Holly oak}, or
{Holm oak}, {Q. Ilex}.
{Kermes oak}, {Q. coccifera}.
{Nutgall oak}, {Q. infectoria}.
Note: Among plants called oak, but not of the genus
{Quercus}, are:
{African oak}, a valuable timber tree ({Oldfieldia
Africana}).
{Australian, or She}, {oak}, any tree of the genus
{Casuarina} (see {Casuarina}).
{Indian oak}, the teak tree (see {Teak}).
{Jerusalem oak}. See under {Jerusalem}.
{New Zealand oak}, a sapindaceous tree ({Alectryon
excelsum}).
{Poison oak}, the poison ivy. See under {Poison}.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Sphalerite \Sphal"er*ite\, n. [Gr. ??? slippery, uncertain. See
{Blende}.] (Min.)
Zinc sulphide; -- called also {blende}, {black-jack}, {false
galena}, etc. See {Blende}
(a) .
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Blende \Blende\, n. [G., fr. blenden to blind, dazzle, deceive,
fr. blind blind. So called either in allusion to its dazzling
luster; or (Dana) because, though often resembling galena, it
yields no lead. Cf. {Sphalerite}.] (Min.)
(a) A mineral, called also {sphalerite}, and by miners {mock
lead}, {false galena}, and {black-jack}. It is a zinc
sulphide, but often contains some iron. Its color is
usually yellow, brown, or black, and its luster resinous.
(b) A general term for some minerals, chiefly metallic
sulphides which have a somewhat brilliant but nonmetallic
luster.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Black-jack \Black"-jack`\, n.
1. (Min.) A name given by English miners to sphalerite, or
zinc blende; -- called also {false galena}. See {Blende}.
2. Caramel or burnt sugar, used to color wines, spirits,
ground coffee, etc.
3. A large leather vessel for beer, etc. [Obs.]
4. (Bot.) The {Quercus nigra}, or barren oak.
5. The ensign of a pirate.
From WordNet (r) 1.7 (wn)
blackjack
n 1: a common scrubby deciduous tree of central and southeastern
United States having dark bark and broad 3-lobed
(club-shaped) leaves; tends to form dense thickets [syn:
{blackjack oak}, {jack oak}, {Quercus marilandica}]
2: a piece of metal covered by leather with a flexible handle;
used for hitting people [syn: {cosh}, {sap}]
3: a card game in which the object is to hold cards having a
higher count than those dealt to the bank up to but not
exceeding 21 [syn: {twenty-one}, {vingt-et-un}]
v : exert pressure on someone through threats [syn: {blackmail},
{pressure}]
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