block in1.■(用木块、石块等)填塞，填塞；封闭；遮住：to block the hole in with bricks用砖头把洞填起来2.■堵塞，阻塞；围住；使受限制：The car has been blocked in by all those lorries.这辆汽车已被那些卡车团团围住了。3.■粗略地画出，画略图，打草样，勾画轮廓；拟大纲[亦作 block out]：to block in a plan of the building粗略地画出这幢大楼的草图The rough sketch has been blocked in.略图已拟就。