What is the meaning of Laird?

A feudal lord in Scottish contexts.

An aristocrat, particularly in Scottish contexts and in reference to the chiefs of the Scottish clans.

A landowner, particularly in Scottish contexts.

Chiefly as laird it over: to behave like a laird, particularly to act haughtily or to domineer; to lord (it over).

a lord or land owner

Source: wiktionary.org