The noun defeat has 2 senses (first 2 from tagged texts)
1. (12) defeat, licking -- (an unsuccessful ending to a struggle or contest; "it was a narrow defeat"; "the army's only defeat"; "they suffered a convincing licking")
2. (3) frustration, defeat -- (the feeling that accompanies an experience of being thwarted in attaining your goals)
Overview of verb defeat
The verb defeat has 2 senses (first 2 from tagged texts)
1. (14) get the better of, overcome, defeat -- (win a victory over; "You must overcome all difficulties"; "defeat your enemies"; "He overcame his shyness"; "She conquered here fear of mice"; "He overcame his infirmity"; "Her anger got the better of her and she blew up")
2. (5) kill, shoot down, defeat, vote down, vote out -- (thwart the passage of; "kill a motion"; "he shot down the student's proposal")