barrier

/ˈbæɹi.ə(ɹ)/

• phonetics
• /ˈbæɹi.ə(ɹ)/ 
• /ˈbæɹi.əɹ/ 

• noun
• 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.

• verb
• To block or obstruct with a barrier.
• 同義詞 : bar;