Meaning

• A structure that bars passage.

• An obstacle or impediment.

• A boundary or limit.

• (grammar) 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 separation between two areas of the body where specialized cells allow the entry of certain substances but prevent the entry of others.

• The lists in a tournament.

• (in the plural) A martial exercise of the 15th and 16th centuries.

Meaning

• To block or obstruct with a barrier.