Strange name given to a single flower (7)
I believe the answer is:
anemone
'flower' is the definition.
(I know that anemone is a type of flower)
'strange name given to a single' is the wordplay.
'strange' indicates an anagram.
'given to' says to put letters next to each other.
'a single' becomes 'one' (a single thing - only one).
'name' is an anagram of 'anem'.
'anem'+'one'='ANEMONE'
(Other definitions for anemone that I've seen before include "A flower; mean one (anag.)" , "White woodland flower" , "Flower; marine creature" , "Bright flower or sea plant" , "Woodland plant - marine polyps" .)