What is the meaning of Guttural?

Sounding harsh and throaty.

having a place of articulation towards the back of the mouth; in modern use, uvular, pharyngeal, or glottal; in earlier or non-technical use, also including velar.

Of, relating to, or connected to the throat.

↑ R. L. Trask A Dictionary of Phonetics (Routledge 1996) p. 164

A harsh and throaty spoken sound

guttural (of a consonant)

throat; guttural

guttural

Source: wiktionary.org