Underbelly
['ʌndəbelɪ] or ['ʌndɚ'bɛli]
Definition
(noun.) the quality of being weak or unprotected; 'the soft underbelly of the Axis'- Winston Churchill.
(noun.) the soft belly or underside of an animal's body.
(noun.) lower side; 'the underbellies of clouds'.
Checked by Adrienne--From WordNet