| air lock |
an obstruction, as in a pipe, caused by a bubble or pocket of trapped air or vapor. [1/2 definitions] |
| apoplexy |
the sudden loss of the ability to feel or move, caused by a rupture or obstruction of an artery in the brain; stroke. |
| barrage |
a man-made obstruction placed in a waterway to slow the flow or increase the depth of the water; dam. [1/3 definitions] |
| block |
a hindrance; obstruction. [2/19 definitions] |
| blockade |
any obstruction designed to prevent passage. [1/3 definitions] |
| breast |
to climb or surmount (a mountain or obstruction). [1/6 definitions] |
| crimp |
an obstruction or hindrance. [1/7 definitions] |
| dam1 |
a barrier or obstruction resembling a dam. [1/4 definitions] |
| diffraction |
modification of light or other waves by partially obstructing them so that they bend around the obstruction and break into bands of different frequencies. |
| dry gangrene |
gangrene that results from an arterial obstruction, characterized by mummification of the affected tissue but no infection. |
| elephantiasis |
a chronic tropical disease, usu. caused by nematode worms, marked by lymphatic obstruction that results in an enormous enlargement and hardening of the skin and tissue just below the skin, esp. of the legs and scrotum. |
| embolism |
in pathology, the obstruction or closure of a blood vessel by undissolved matter carried in the blood stream. |
| fish ladder |
a series of pools at gradually increasing heights that allows fish, such as salmon, to swim upstream around a dam or other obstruction. |
| free |
to disattach, unloose, or make clear of obstruction. [1/20 definitions] |
| infarct |
a localized area of tissue that is dead or dying from obstruction of its blood supply. |
| obstacle |
that which impedes or prevents forward movement or progress; obstruction. |
| occlusion |
obstruction or closing of a passage, such as a blood vessel. [1/3 definitions] |
| retreat |
to draw back in the face of danger or obstruction. [1/8 definitions] |
| stick2 |
to be or become immovable, as by difficulty or obstruction. [1/19 definitions] |
| stymie |
in golf, the obstruction of one's line of play by an opponent's ball on a putting green. [1/3 definitions] |
| tie-up |
a temporary stoppage, as of traffic, service, or production, caused by some obstruction, accident, breakdown, or the like. |