Definitions
1.NounA structure that bars passage."The bus went through a railway barrier and was hit by a train.; The bomber had passed through one checkpoint before blowing himself up at a second barrier."
2.NounAn obstacle or impediment."Even a small fee can be a barrier for some students."
3.NounA boundary or limit."Few marathon runners break the three-hour time barrier."
4.NounA 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.
5.NounA separation between two areas of the body where specialized cells allow the entry of certain substances but prevent the entry of others.
6.NounThe lists in a tournament.
7.NounA martial exercise of the 15th and 16th centuries.
8.VerbTo block or obstruct with a barrier.