In Jewish mysticism the Chamber of Guf (also Guph or even Gup) Hebrew for "body" or "corpse", also called the Otzar (Hebrew for "treasury"), is the Hall of Souls, located in the Seventh Heaven. Every human soul is held to emanate from the Guf. ...
Nonsensical talk or thinking; superfluous information; Insolent or otherwise unacceptable remarks; To break wind; To mislead
A player's one-point.
V. To guff is to break wind - this word is presumably some sort of derivation of chuff or vice versa. Not to be confused with gaff.