barrier /ˈbæɹi.ə/noun 7verb 1forms 3 noun7 •A 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. •An obstacle or impediment.Even a small fee can be a barrier for some students. •A separation between two areas of the body where specialized cells allow the entry of certain substances but prevent the entry of others. •A boundary or limit.Few marathon runners break the three-hour time barrier. •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. •(historical) The lists in a tournament. •[in the plural] (historical) A martial exercise of the 15th and 16th centuries. verb1 •To block or obstruct with a barrier. formsbarriered · barriering · barriers
