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 of the parts of the word are used).
'GET' can be found hidden inside 'strange things to'.
(Other definitions for get that I've seen before include "Procure from vegetables" , "Acquire" , "Escape" , "Procure or secure" , "Receive; obtain" .)