She and Charlie will take a test (5)
I believe the answer is:
coral
'she' is the definition.
'charlie will take a test' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet: alpha, bravo, charlie etc.).
'will take' means one lot of letters go next to another.
'a test' becomes 'oral' (oral is a type of examination).
'c'+'oral'='CORAL'
'and' is the link.
(Other definitions for coral that I've seen before include "Marine polyps, often forming reefs" , "Hard pink substance formed by skeletons of tiny sea creatures" , "(Massed skeletons of) tiny invertebrate" , "Pink growth which forms reefs and islands" , "certain islands" .)