Noun

(en noun)

Freedom from some business or activity.

(obsolete) Free time given over to a specific purpose; occupation, activity.

*, II.28:

The first exploited his, sundrie waies, and excelleth in military exploits, and utilitie of his publike vacations .

A period during which official activity or business is formally suspended; an official holiday from university, law courts etc.

(North America) A holiday; a stretch of leisure time away from work or duty and devoted to rest or pleasure.

The act of vacating something; moving out.

The Conservative Party’s vacation of the centre ground gave an opportunity to its opponents.

(US, legal) The act of making legally void.

Noun

(en noun)

An instance of moving to live in another place for a while.

Seasonal moving for animals, birds or fishes to breed or find a new home.

* {{quote-magazine, date=2013-01-01

, author=Paul Bartel, Ashli Moore , title=Avian Migration: The Ultimate Red-Eye Flight , volume=101, issue=1, page=47–48 , magazine= citation , passage=Many of these classic methods are still used, with some modern improvements. For example, with the aid of special microphones and automated sound detection software, ornithologists recently reported […] that pine siskins (Spinus pinus ) undergo an irregular, nomadic type of nocturnal migration .}}

Movement in general.

The migration of lead from a can to the food inside it can cause lead poisoning.

(computing) Instance of changing a platform from an environment to another one.