get a line on (someone/something)

American

to get special information that will help you find someone or do something.

Detectives hope to get a line on the suspect from the fingerprints he left.

• a roof over head
• a roof over your head
• a rotten apple
• a rough diamond
• a rough ride
• around and around
• around ears
• around someone's ears
• around-the-clock
• around the clock
• around the corner
• a roving eye
• arrive at
• arrive at something
• arse about face
• arse-kisser
• arse-licker
• arse over tip
• arty-farty
• a rubber check
• a rubber stamp
• a rude awakening
• a rule of thumb
• a rum do
• a running battle