The verb conclude has 5 senses (first 3 from tagged texts)
1. (36) reason, reason out, conclude -- (decide by reasoning; draw or come to a conclusion; "We reasoned that it was cheaper to rent than to buy a house")
2. (9) conclude -- (bring to a close; "The committee concluded the meeting")
3. (1) conclude, resolve -- (reach a conclusion after a discussion or deliberation)
4. conclude, close -- (come to a close; "The concert closed with a nocturne by Chopin")
5. conclude -- (reach agreement on; "They concluded an economic agreement"; "We concluded a cease-fire")