What does 'salt' refer to in string-to-key (s2k) specifier? -

What is the 'salt' string-to-key (S2) specifier?

This seems to be a random number generator to shake things, but I would like to know what does 'salt' mean?

For example it is written:

  3.6. 1.2. Salted S2K contains "salt" value in the S2 specifier in it - some arbitrary data - that have gone along with the passphrase string to help prevent dictionary attacks October 0: 0x01 October 1: hash algorithms Octet 2-9 : 8-octet salt value is like Salt S2K absolutely simple, except that the input of hash function (s) contains 8 octets of salt from the S2 specifier, after passphrase  

< P> but the definition of salt Committee has not, however, its meaning is clear.

from:

In cryptography, there are random bits in a salt , Which is used as one of the inputs for a major derivative function. The other input is usually a password or passphrase. The output of the key derivative function is stored as an encrypted version of the password.

There are a few bits used to increase the security of a salt system. They help in stopping.