(UK, informal) All over the place

(film) A chief lighting technician for a motion-picture or television production. / A glassblower.

(colloquial) An old man. / (Britain, informal) The leader of a group or team, such as a boss, foreman, coach, publican. / A sailor. / (Canada) The baby in the house.

A surname.

(nautical) A ship with a gaff rig.

plural of gaffer

plural of gaffrigger

A sturdy adhesive tape, made of plastic reinforced with cross-linked fibre, often used by stage lighting electricians.

plural of gaffer tape

(obsolete) A lever used to bend a crossbow. / A steel spur attached to a gamecock (sometimes used figuratively).