The verb dismiss has 6 senses (first 3 from tagged texts)
1. (14) dismiss, disregard, brush aside, brush off, discount, push aside, ignore -- (bar from attention or consideration; "She dismissed his advances")
2. (4) dismiss, throw out -- (cease to consider; put out of judicial consideration; "This case is dismissed!")
3. (1) dismiss, send packing, send away, drop -- (stop associating with; "They dropped her after she had a child out of wedlock")
4. fire, give notice, can, dismiss, give the axe, send away, sack, force out, give the sack, terminate -- (terminate the employment of; "The boss fired his secretary today"; "The company terminated 25% of its workers")
5. dismiss, usher out -- (end one's encounter with somebody by causing or permitting the person to leave; "I was dismissed after I gave my report")
6. dissolve, dismiss -- (declare void; "The President dissolved the parliament and called for new elections")