axillae axilla • axillant · · · Info · Definitions · Synonyms · Characters · · axillae · · Text Latin · · Script 7 · · Length Definitions · · · (noun) the hollow under the arm where it is joined to the shoulder. Synonyms: armpit, axilla, axillary cavity, axillary fossa. Example: "They were up to their armpits in water." · · Noun Definition 1 Synonyms · · · armpit · · Synonym 1 axilla · · Synonym 2 axillary cavity · · Synonym 3 axillary fossa · · Synonym 4 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C x latin small letter x U+0078