First Lady and others come to mountain (7)
I believe the answer is:
everest
'mountain' is the definition.
(Mount Everest)
'first lady and others' is the wordplay.
'first lady' becomes 'eve' (first woman in the Bible).
'and others' becomes 'rest' (I've seen this in other clues).
'eve'+'rest'='EVEREST'
'come to' is the link.
(Other definitions for everest that I've seen before include "Highest peak" , "Himalyan peak" , "Huge achievement - highest climb" , "The world's highest mountain" , "Mountain on the Nepal-Tibet border" .)