Found 2 items, similar to Bur oak.
English → English
Definition: bur oak
n : medium to large deciduous oak of central and eastern North
America with ovoid acorns deeply immersed in large
fringed cups; yields tough close-grained wood [syn: burr oak
, mossy-cup oak
, mossycup oak
, Quercus macrocarpa
English → English
Definition: Bur 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:
, Quercus nigra
, Quercus Michauxii
, Quercus tinctoria
; -- called also yellow oak
or quercitron oak
(see under Bur
.), Quercus macrocarpa
; -- called
or mossy-cup oak
, Quercus Prinus
and Quercus densiflora
(see under Chinquapin
), Quercus prinoides
Coast live oak
, Quercus agrifolia
, of California; -- also
(see under Live
), Quercus virens
, the best of
all for shipbuilding; also, Quercus Chrysolepis
. Same as Swamp oak
, Quercus obtusifolia
, Quercus rubra
, Quercus coccinea
, Quercus ilicifolia
, Quercus undulata
, Quercus imbricaria
, Quercus falcata
Swamp Spanish oak
, Quercus palustris
Swamp white oak
, Quercus bicolor
, Quercus aquatica
Water white oak
, Quercus lyrata
, Quercus Phellos
[1913 Webster] Among the true oaks in Europe are:
, Quercus Cerris
, Quercus Suber
English white oak
, Quercus Robur
, Quercus Ilex
, Quercus coccifera
, Quercus infectoria
Note: Among plants called oak, but not of the genus
, a valuable timber tree (Oldfieldia Africana
or She oak
, any tree of the genus
, the teak tree (see Teak
. See under Jerusalem
New Zealand oak
, a sapindaceous tree (Alectryon excelsum
, a shrub once not distinguished from poison ivy,
but now restricted to Rhus toxicodendron
or Rhus diversiloba
or Silk-bark oak
, an Australian tree
, oak wood colored green by the growth of the
mycelium of certain fungi.
, a large, smooth, round gall produced on the
leaves of the American red oak by a gallfly (Cynips confluens
). It is green and pulpy when young.
(Zo["o]l.), a British geometrid moth (Biston prodromaria
) whose larva feeds on the oak.
, a gall found on the oak. See 2d Gall
(Bot.), the mycelium of a fungus which forms
leatherlike patches in the fissures of oak wood.
. (Zo["o]l.) See Pruner
, the insect.
, a kind of gall produced on the oak by the
insect Diplolepis lenticularis
, a wartlike gall on the twigs of an oak.
, one of the three great annual English horse races
(the Derby and St. Leger being the others). It was
instituted in 1779 by the Earl of Derby, and so called
from his estate.
To sport one's oak
, to be “not at home to visitors,”
signified by closing the outer (oaken) door of one's
rooms. [Cant, Eng. Univ.]
, Burr \Burr\
(b[^u]r), n. [OE. burre burdock; cf. Dan.
borre, OSw. borra, burdock, thistle; perh. akin to E. bristle
(burr- for burz-), or perh. to F. bourre hair, wool, stuff;
also, according to Cotgrave, “the downe, or hairie coat,
wherewith divers herbes, fruits, and flowers, are covered,”
fr. L. burrae trifles, LL. reburrus rough.]
1. (Bot.) Any rough or prickly envelope of the seeds of
plants, whether a pericarp, a persistent calyx, or an
involucre, as of the chestnut and burdock; a seed vessel
having hooks or prickles. Also, any weed which bears burs.
Amongst rude burs and thistles. --Milton.
Bur and brake and brier. --Tennyson.
2. The thin ridge left by a tool in cutting or shaping metal.
, n., 2.
3. A ring of iron on a lance or spear. See Burr
, n., 4.
4. The lobe of the ear. See Burr
, n., 5.
5. The sweetbread.
6. A clinker; a partially vitrified brick.
(a) A small circular saw.
(b) A triangular chisel.
(c) A drill with a serrated head larger than the shank; --
especially a small drill bit used by dentists.
8. [Cf. Gael. borr, borra, a knob, bunch.] (Zo["o]l.) The
round knob of an antler next to a deer's head. [Commonly
(Bot.), a useful and ornamental species of oak
) with ovoid acorns inclosed in deep
cups imbricated with pointed scales. It grows in the
Middle and Western United States, and its wood is tough,
close-grained, and durable.
(Bot.), a plant of the genus Sparganium
long ribbonlike leaves.