Weather map line (5)
'weather map line' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for front that I've seen before include "Face" , "Present" , "Meteorological boundary between different air masses" , "confident manner?" , "Forward part - weather feature" .)
'weather map line' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for isobar that I've seen before include "Line on map connecting areas of equal pressure" , "Map line showing atmosphere pressure" , "Meteorological line joining points of equal pressure" , "Met map pressure line" , "Line on map indicating atmospheric pressure" .)