无防备的一面

[ noun ]
the side on which your vision is limited or obstructed
<noun.location>

Blind \Blind\, a. [AS.; akin to D., G., OS., Sw., & Dan. blind,
Icel. blindr, Goth. blinds; of uncertain origin.]
1. Destitute of the sense of seeing, either by natural defect
or by deprivation; without sight.

He that is strucken blind can not forget
The precious treasure of his eyesight lost. --Shak.

2. Not having the faculty of discernment; destitute of
intellectual light; unable or unwilling to understand or
judge; as, authors are blind to their own defects.

But hard be hardened, blind be blinded more,
That they may stumble on, and deeper fall. --Milton.

3. Undiscerning; undiscriminating; inconsiderate.

This plan is recommended neither to blind
approbation nor to blind reprobation. --Jay.

4. Having such a state or condition as a thing would have to
a person who is blind; not well marked or easily
discernible; hidden; unseen; concealed; as, a blind path;
a blind ditch.

5. Involved; intricate; not easily followed or traced.

The blind mazes of this tangled wood. --Milton.

6. Having no openings for light or passage; as, a blind wall;
open only at one end; as, a blind alley; a blind gut.

7. Unintelligible, or not easily intelligible; as, a blind
passage in a book; illegible; as, blind writing.

8. (Hort.) Abortive; failing to produce flowers or fruit; as,
blind buds; blind flowers.

{Blind alley}, an alley closed at one end; a cul-de-sac.

{Blind axle}, an axle which turns but does not communicate
motion. --Knight.

{Blind beetle}, one of the insects apt to fly against people,
esp. at night.

{Blind cat} (Zo["o]l.), a species of catfish ({Gronias
nigrolabris}), nearly destitute of eyes, living in caverns
in Pennsylvania.

{Blind coal}, coal that burns without flame; anthracite coal.
--Simmonds.

{Blind door}, {Blind window}, an imitation of a door or
window, without an opening for passage or light. See
{Blank door} or {Blank window}, under {Blank}, a.

{Blind level} (Mining), a level or drainage gallery which has
a vertical shaft at each end, and acts as an inverted
siphon. --Knight.

{Blind nettle} (Bot.), dead nettle. See {Dead nettle}, under
{Dead}.

{Blind shell} (Gunnery), a shell containing no charge, or one
that does not explode.

{Blind side}, the side which is most easily assailed; a weak
or unguarded side; the side on which one is least able or
disposed to see danger. --Swift.

{Blind snake} (Zo["o]l.), a small, harmless, burrowing snake,
of the family {Typhlopid[ae]}, with rudimentary eyes.

{Blind spot} (Anat.), the point in the retina of the eye
where the optic nerve enters, and which is insensible to
light.

{Blind tooling}, in bookbinding and leather work, the
indented impression of heated tools, without gilding; --
called also {blank tooling}, and {blind blocking}.

{Blind wall}, a wall without an opening; a blank wall.