An obstacle or impediment.
A separation between two areas of the body where specialized cells allow the entry of certain substances but prevent the entry of others.
A martial exercise of the 15th and 16th centuries.
The lists in a tournament.
A structure that bars passage.
A node (in government and binding theory) said to intervene between other nodes A and B if it is a potential governor for B, c-commands B, and does not c-command A.
A boundary or limit.
To block or obstruct with a barrier.
A critical subject or situation with concealed or unpredictable implications.
A piece of exercise device consisting of a pivoting tube attached to the ground to which a barbell can be fitted to lift it off the ground.
A mine that is placed on land and designed to explode when stepped upon or touched.