Tipsy Chechens, full of spirit (6)
I believe the answer is:
psyche
'spirit' is the definition.
(psyche is a kind of spirit)
'tipsy chechens full of' is the wordplay.
'full of' says the answer is hidden in the clue (inside).
'PSYCHE' is hidden in the letters of 'tipsy chechens'.
(Other definitions for psyche that I've seen before include "Immaterial part of a person" , "Subject of 11 [ODE]" , "Soul, spirit; lover of Cupid" , "Human faculty for thought - Cupid's lover" , "The human mind/spirit" .)