Clue: Rectangle … hang on … maybe bit unclear … squashed, primarily! (7)
Answer: RHOMBUS
Explanation: Rectangle … hang on … maybe bit unclear … squashed, primarily! (7)
First letters ('primarily') of '**R**ectangle **H**ang **O**n **M**aybe **B**it **U**nclear **S**quashed', with a rather tortuous &lit definition.