The verb decide has 4 senses (first 3 from tagged texts)
1. (125) decide, make up one's mind, determine -- (reach, make, or come to a decision about something; "We finally decided after lengthy deliberations")
2. (6) decide, settle, resolve, adjudicate -- (bring to an end; settle conclusively; "The case was decided"; "The judge decided the case in favor of the plaintiff"; "The father adjudicated when the sons were quarreling over their inheritance")
3. (4) decide -- (cause to decide; "This new development finally decided me!")
4. decide -- (influence or determine; "The vote in New Hampshire often decides the outcome of the Presidential election")