blind alley | (figurative) a course of action that is unproductive and offers no hope of improvement, all the clues led the police into blind alleys, so far every road that we've been down has turned out to be a blind alley |
double-blind procedure double-blind experiment double-blind study | an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment, a double-blind procedure is used to guard against both experimenter bias and placebo effects |
blind flying blind landing | using only instruments for flying an aircraft because you cannot see through clouds or mists etc. |
blind stitching | stitching that is not easily seen or noticed |
double blind | a test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed, designed to reduce or eliminate bias in the results |
amphiuma congo snake congo eel blind eel | aquatic eel-shaped salamander having two pairs of very small feet, of still muddy waters in the southern United States |
blind snake worm snake | wormlike burrowing snake of warm regions having vestigial eyes |
western blind snake Leptotyphlops humilis | burrows among roots of shrubs and beneath rocks in desert and rocky hillside areas and beach sand of western United States |
gill arch branchial arch gill bar | one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians |
abutment arch | an arch supported by an abutment |
arch | (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it |
arch archway | a passageway under a curved masonry construction, they built a triumphal arch to memorialize their victory |
arch support | a support for the arch of the foot |
bell arch | a round arch resting on corbels |
blind screen | a protective covering that keeps things out or hinders sight, they had just moved in and had not put up blinds yet |
blind | a hiding place sometimes used by hunters (especially duck hunters), he waited impatiently in the blind |
blind alley cul de sac dead-end street impasse | a street with only one way in or out |
blind corner | a street corner that you cannot see around as you are driving |
blind curve blind bend | a curve or bend in the road that you cannot see around as you are driving |
broken arch | an arch with a gap at the apex, the gap is usually filled with some decoration |
camber arch | an arch with a straight horizontal extrados and a slightly arched intrados |
corbel arch | (architecture) an arch constructed of masonry courses that are corbelled until they meet |
drop arch | a blunt pointed arch drawn from two centers within the span |
flat arch straight arch | an arch with mutually supporting voussoirs that has a straight horizontal extrados and intrados |
Gothic arch | a pointed arch, usually has a joint (instead of a keystone) at the apex |
lancet arch lancet | an acutely pointed Gothic arch, like a lance |
Moorish arch horseshoe arch | a round arch that widens before rounding off |
ogee arch keel arch | a pointed arch having an S-shape on both sides |
pier arch | an arch supported on piers |
pointed arch | an arch with a pointed apex, characteristic of Gothic architecture |
proscenium arch | the arch over the opening in the proscenium wall |
rampant arch | an arch whose support is higher on one side than on the other |
roller blind | a window shade that rolls up out of the way |
Roman arch semicircular arch | a round arch drawn from a single center |
round arch | an arch formed in a continuous curve, characteristic of Roman architecture |
rowlock arch | an arch that is formed with more than one concentric row of voussoirs |
safety arch | an undecorated arch that is included in order to strengthen or support a construction |
scoinson arch sconcheon arch | an arch that supports part of the wall |
segmental arch | a shallow arch, an arch that is less than a semicircle |
shouldered arch | an arch consisting of a horizontal lintel supported at each end by corbels that project into the aperture |
skeen arch skene arch scheme arch diminished arch | an arch whose height is less than half its width |
skew arch | an arch whose jambs are not at right angles with the face |
steel arch bridge | a steel bridge constructed in the form of an arch |
threeentered arch basket-handle arch | a round arch whose inner curve is drawn with circles having three centers |
trefoil arch | a pointed arch having cusps in the intrados on either side of the apex |
trimmer arch | an arch built between trimmers in a floor (to support the weight of a hearth) |
triumphal arch | a monumental archway, usually they are built to commemorate some notable victory |
trumpet arch | a conical squinch |
Tudor arch fourentered arch | a low elliptical or pointed arch, usually drawn from four centers |
Venetian blind | a window blind made of horizontal strips that overlap when closed |