Emojis were used as a way to symbolically express feelings. A Tractor emoji is associated with the Travel and Places category. A tractor is a piece of equipment that can be used by a farmer or anyone else who works on the land.
NOTE: In 2015, Emoji 1.0 added this and suggested this emoji to Unicode 6.0 in 2010.
:tractor: (Github, Slack)emoji copy and pasteemoji meaningtractor emoji