Exclude a Column from SharePoint Search Crawl

Requirement:
We keep few fields for configuration in a custom SharePoint application and don't want those fields to appear in SharePoint Search results.

Solution:
SharePoint Fields/Columns has a property: NoCrawl, just turn it ON, we can exclude columns from SharePoint Search! Here is how I turned Off search visibility of a field using PowerShell:

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

#Set these two variables accordingly
$WebURL  = "http://sharepoint.crescent.com"
$FieldName = "ConfigData"

 #Get the Web
 $web = Get-SPWeb $WebURL

 #Get the field
 $Field = $web.Fields[$FieldName]

    #Set the search prefererence
 $Field.NoCrawl = $true
  $Field.Update($true)

It takes effect after a search crawl takes place.