This eight-sided red sign tells drivers to come to a complete halt.
What is a stop sign?
This bright symbol usually means clear or sunny weather.
What is the sun?
Waving a plain flag of this color traditionally signals surrender or a truce.
What is white?
This shape is the familiar symbol of love.
What is a heart?
Finding one of these uncommon clovers is said to bring good luck.
What is a four-leaf clover?
Moving the head up and down usually communicates this answer.
What is yes?
This upside-down triangular sign tells drivers to let other traffic go first.
What is a yield sign?
This six-pointed icy symbol indicates snow.
What is a snowflake?
This black-and-white patterned flag marks the finish of an auto race.
What is a checkered flag?
A picture of this glowing object often represents a new idea.
What is a light bulb?
Hanging this curved piece of metal above a doorway is said to bring luck.
What is a horseshoe?
Moving the head from side to side usually communicates this answer.
What is no?
A sign with this shape and yellow color usually warns of a road hazard ahead.
What is a diamond?
This jagged symbol warns of lightning or thunderstorms.
What is a lightning bolt?
A black flag bearing a skull and crossbones is commonly called this.
What is the Jolly Roger?
This white bird carrying an olive branch represents peace.
What is a dove?
Carrying this part of a rabbit has long been considered lucky.
What is a rabbit's foot?
Moving an open hand back and forth can say hello or goodbye.
What is waving?
Road construction and work-zone signs are usually this color.
What is orange?
A blue line with triangles represents this kind of front.
What is a cold front?
The Olympic flag displays five interlocking shapes of this kind.
What are rings?
A balanced pair of these represents justice.
What are scales?
Two people pull this forked poultry bone apart while making a wish.
What is a wishbone?
Raising this digit often signals approval or a job well done.
What is a thumbs-up?
This five-sided sign shape warns of a school zone or school crossing.
What is a pentagon?
A red line with semicircles represents this kind of front.
What is a warm front?
Flying a national flag at half-staff commonly signals this.
What is mourning or respect for someone who died?
This symbol of a skull above crossed bones warns of poison or danger.
What is the skull and crossbones?
People do this to a wooden surface after mentioning good fortune so they will not jinx it.
What is knock on wood?
Placing an index finger in front of the lips asks for this.
What is quiet or silence?
In the United States, a round yellow sign warns that this type of crossing is ahead.
What is a railroad crossing?
A large H on a weather map marks this type of pressure system.
What is high pressure?
The 13 stripes on the United States flag represent these original political units.
What are the original colonies?
Three chasing arrows arranged in a loop form this environmental symbol.
What is the recycling symbol?
Breaking this household object is said to bring seven years of bad luck.
What is a mirror?
Raising both shoulders briefly usually expresses this feeling.
What is uncertainty or I don't know?
A broken white line between traffic lanes means drivers may do this when it is safe.
What is change lanes?
A large L on a weather map marks this type of pressure system.
What is low pressure?
The 50 stars on the United States flag represent these.
What are the states?
This symbol, written as &, stands for this common word.
What is and?
After spilling salt, tradition says to toss a pinch over this shoulder.
What is the left shoulder?
Crossing these two digits is a common gesture of hope or good luck.
What are the fingers?
A red X displayed above a highway lane means this.
What is the lane is closed?
These lines with small feathers show both wind direction and wind speed.
What are wind barbs?
This is the familiar name commonly used for the flag of the United Kingdom.
What is the Union Jack?
This medical symbol is a staff with one snake wrapped around it.
What is the Rod of Asclepius?
This combination of weekday and date is famously associated with bad luck.
What is Friday the 13th?
Placing a hand over this body part can show respect during the national anthem.
What is the heart?