gaffer

A chief lighting technician for a motion-picture or television production.

A glassblower.

The apprentice carries a gather of glass on the blowpipe to the gaffer's bench […]

Someone aboard a boat whose duty is to gaff a (large) fish once the angler has reeled it in.

An old person, usually a man.

If thou return not, Gammer o'er her pail Will sing in sorrow, 'neath the brinded cow, And Gaffer sigh over his nut-brown ale […]

The leader of a group or team, such as a boss, foreman, coach, or publican.

And you're here to tell me what's what. Just like your bloody gaffer promised.

A sailor.

The baby in the house.

A surname.