Definition of "tar"
A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
A solid residual byproduct of tobacco smoke.
A sailor, because of their tarpaulin clothes. Also Jack Tar.
Black tar, a form of heroin.
A program for archiving files, common on Unix.
A file produced by such a program.
To coat with tar.
To create a tar archive.