A beautiful name that clearly speaks of the winter season.
The name "wintr" has only five letters and just one syllable. Single-syllable names are highly rare and extremely valuable. Established brands using one syllable names include Nike, Box and Shell.
Wintr.com is a dot com domain. Dot com domains are the most valuable domain extension in the world, famously used by websites like youtube.com. Owning a dot com says that you own the word "wintr" online.