塞 - close, shut, cover

stoppage; blocking

to stop up; to close up; to block (up); to plug up; to shut up; to cover (ears, eyes, etc.); to close (eyes, mouth)

to be closed; to be blocked; to be healed (e.g. wound); to be shut up

blockage; blockade; blocking up; stoppage; obstruction; occlusion

Serbia

pulmonary embolism; pulmonary thromboembolism

eradication of (sources of) evil; laying the ax to the root of evil

inside a fort

cerebral infarction; (ischemic) stroke

embolus; abnormal substance (i.e. air) circulating in the blood

fort; defensive position

blockage of a source