1) Alarming sight at sea 2) Black flag 3) Blackbeard sailed under it 4) Convivial Mudd 5) Cross symbol 6) Ebert at Christmas time 7) Ebert in a merry mood 8) Emblem for Lafitte 9) Flag belying its name 10) Flag flown on a pirate ship 11) Flag for blackbeard 12) Flag for captain kidd 13) Flag of a sort 
The Jolly Roger is any of various flags flown to identify a ship`s crew as pirates that were about to attack. The flag most commonly identified as the Jolly Roger today is the skull and crossbones (although swords are also common), a flag consisting of a human skull above two long bones (probably tibias) set in an x-mark arrangement, most usually....
The infamous skull and crossbones flag, which was flown to warn “here there be pirates.”
the pirate flag with its skull and cross bones, see my flag page for more details
The pirate flag - a white skull and crossbones on a black background.
The Jolly Roger is a black flag with a white skull and crossed bones emblem, allegedly flown by pirates during the 18th century.Jolly Roger is London Cockney rhyming slang for a lodger.
pirate flag
[Treasure Island] a black flag of pirates, with a white skull and crossbones.
a flag flown by pirates, having the device of a white skull and crossbones on a black field.
Black pirate flag with white skull and crossbones