Wearing small garment, provided it's taken up (3,4)
I believe the answer is:
ski lift
'it's taken up' is the definition.
I can't tell whether this definition defines the answer.
'wearing small garment provided' is the wordplay.
'wearing' is an insertion indicator.
'small' becomes 's' (abbreviation - e.g. clothes size).
'garment' becomes 'kilt' (kilt is a kind of garment).
'provided' becomes 'if' (eg 'provided it's sunny' means 'if it's sunny').
's'+'kilt'='skilt'
'skilt' going around 'if' is 'SKI-LIFT'.
Can you help me to learn more?
(Other definitions for ski lift that I've seen before include "Winter sports elevator" , "It can help you get up at Aviemore" , "one can ride up here" , "Winter sports facility" , "Winter sports ride" .)