From BiblePortal Wikipedia

King James Dictionary [1]

VAINGLO'RY, n. vain and glory. Exclusive vanity excited by one's own performances empty pride undue elation of mind.

He hath nothing of vainglory.

Let nothing be done through strife or vainglory.  Philippians 2 .

Webster's Dictionary [2]

(n.) Excessive vanity excited by one's own performances; empty pride; undue elation of mind; vain show; boastfulness.

International Standard Bible Encyclopedia [3]

vān - glō´ri ( κενοδοξία , kenodoxı́a ): "Vainglory" is the translation of kenodoxia , "empty glory" or "pride," nearly akin to vanity in the modern sense (  Philippians 2:3 ). Kenódoxos is "vainglorious" ( Galatians 5:26 , "Let us not be desirous of vainglory," the Revised Version (British and American) "Let us not become vainglorious"). In  1 John 2:16 the Revised Version (British and American) has "the vainglory of life" ( alazoneı́a toú bı́ou ) for "the pride of life"; compare  James 4:16 , "Ye glory in your vauntings" ( alazoneia ). Kenodoxia is translated "vainglory" (The Wisdom of Solomon 14:14, "For by the vain glory of men they (idols) entered into the world," the Revised Version (British and American) "vaingloriousless"); alazoneia occurs in The Wisdom of Solomon 5:8, translated "vaunting." "Pride is applicable to every object, good or bad, high or low, small or great; vanity is applicable only to small objects; pride is therefore good or bad; vanity is always bad; it is always emptiness or nothingness" (Crabb, English Synonymes ).