skull-and-crossbones

Toxic warning symbol

A skull-and-crossbones is a symbol depicting a human skull with two bones crossed beneath it.

It traditionally marked poison containers as a warning and appeared on pirate flags to signal deadly intent.

The image persists on hazardous materials, in Halloween decorations, and as a general emblem of danger or death: The bottle was marked with a skull-and-crossbones.

piracy

Jolly Roger

Buccaneer's standard

privateer · plunder · treasure · galleon · cutlass · swashbuckler · marooned · doubloon · mutiny · shipmate

danger

warning

Alert about danger

  • hazardSource of potential harm
  • toxicCapable of causing harm
  • poisonHarmful ingested substance

caution · lethal · harmful · peril · threat · menace · risk · unsafe · treacherous · precarious

poison

toxic

Capable of causing harm

hemlock · belladonna · pesticide · neurotoxin · ricin · botulinum · strychnine · curare · antidote · poison bottle

death

mortality

State of eventual death

memento mori · macabre · morbid · skeletal · reaper · funeral · obituary · necropolis · sepulcher · mausoleum

emblem

insignia

Distinguishing mark of rank

  • badgeWorn symbol of membership
  • tattooPermanent dermal design
  • flagCloth symbol or signal

patch · Punisher · biker · military · squadron · regiment · special forces · Navy SEALs · death's head · iconography

Opposites
safety warning

skull-and-crossbonessafety seal

Intact packaging verification

seal of approval · FDA approved · organic certification · check mark · green light

life and death symbolism

skull-and-crossbonestree of life

Diagram of evolutionary connections

ankh · heart symbol · dove · caduceus · phoenix

moral/cultural association

skull-and-crossboneswhite flag

Signal of capitulation

peace symbol · olive branch · Red Cross · halo · angel wings

Family

skull, crossbones, skulls, bones, boneless, cross, crossed, crossing, crosses

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G