Means of travel — female not telling truth (6)
I believe the answer is:
flying
'means of travel' is the definition.
'flying' can be an answer for 'travel' (flying is a kind of travel). I'm unsure of the 'means of' bit.
'female not telling truth' is the wordplay.
'female' becomes 'f' (common abbreviation).
'not telling truth' becomes 'lying' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'f'+'lying'='FLYING'
Can you help me to learn more?
(Other definitions for flying that I've seen before include "- Buttress, - bomb" , "& 20 Maritime aircraft" , "UFO" , "Taking flight" , "''Those magnificent men in their ... machines'' (film theme song)" .)