What does "occasion" mean?

Additional senses

1. 2.I'll take the occasion which he gives to bring Him to his death. Waller.
2. 3.An occurrence or condition of affairs which brings with it some unlooked-for event; that which incidentally brings to pass an event, without being its efficient cause or sufficient reason; accidental or incidental cause. Her beauty was the occasion of the war. Dryden.
3. 4.Need; exigency; requirement; necessity; as, I have no occasion for firearms. After we have served ourselves and our own occasions. Jer. Taylor. When my occasions took me into France. Burke.
4. 5.A reason or excuse; a motive; a persuasion. Whose manner was, all passengers to stay, And entertain with her occasions sly. Spenser. On occasion, in case of need; in necessity; as convenience requires; occasionally. "That we might have intelligence from him on occasion," De Foe. See Opportunity.
5. 6.To give occasion to; to cause; to produce; to induce; as, to occasion anxiety. South. If we inquire what it is that occasions men to make several combinations of simple ideas into distinct modes. Locke.