Some strange things to come down with (3)
I believe the answer is:
get
'come down with' is the definition.
(synonyms)
'some strange things to' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'GET' is hidden in the letters of 'strange things to'.
(Other definitions for get that I've seen before include "Procure from vegetables" , "Acquire" , "Escape" , "Procure or secure" , "Receive; obtain" .)