Conditions originally ideal for skiing (3)
I believe the answer is:
ifs
'conditions' is the definition.
(if can mean a condition)
'originally ideal for skiing' is the wordplay.
'originally' indicates taking the first letters.
The initial letters of 'ideal for skiing' is 'IFS'.
(Other definitions for ifs that I've seen before include "No ...,ands or buts, no argument allowed" , "Conditions or suppositions, may join with buts" , "Conditional conjunctions" , "Suppositions, may be accompanied by buts" , "If . . . and ands were pots and pans" .)