A stream,river or another body of water.
On a weather map, the symbol for a cold front is a blue line with blue triangles facing the direction that the front is moving.
It usually means water.
Line
The symbol for a substance that is soluble is (aq) which means aqueous or in aqueous solution.
it means water
a blue line on a map means that it is water weather it is a stream river or lake
it means water
Water.
equeater
If you see a blue symbol beside players in a server, it simplt means that all players with that symbol beside their names are friends, and are playing in the same Party.
A blue triangle.The cold front symbol is a line with triangles on one sidea line with triangels on top
The horizon
A blue line represents a river on a map so you know it is a river,a lake, or the sea
the blue means the sky and the yellow means the yellow grass and wheat.
a river
A circle with an arrow pointing out of the circle