Label, strange, oddly ignored (3)
I believe the answer is:
tag
'label' is the definition.
(I know that label can be written as tag)
'strange oddly ignored' is the wordplay.
'oddly ignored' indicates alternate letters (letters in odd-numbered positions are removed).
The alternate letters of 'strange' are 'TAG'.
(Other definitions for tag that I've seen before include "Children's chasing game" , "Label or sticker" , "Label - children's game" , "dog" , "Refrain" .)