aboundyoudaoicibaDictYouDict[abound 词源字典]
abound: [14] Abound has no connection with bind or bound. Its Latin source means literally ‘overflow’, and its nearest relative among English words is water. Latin undāre ‘flow’ derived from unda ‘wave’ (as in undulate), which has the same ultimate root as water. The addition of the prefix ab- ‘away’ created abundāre, literally ‘flow away’, hence ‘overflow’, and eventually ‘be plentiful’.

The present participial stem of the Latin verb gave English abundant and abundance. In the 14th and 15th centuries it was erroneously thought that abound had some connection with have, and the spelling habound was consequently common.
=> inundate, surround, undulate, water[abound etymology, abound origin, 英语词源]
abound (v.)youdaoicibaDictYouDict
early 14c., from Old French abonder "to abound, be abundant, come together in great numbers" (12c.), from Latin abundare "overflow, run over," from Latin ab- "off" (see ab-) + undare "rise in a wave," from unda "water, wave" (see water (n.1)). Related: Abounded; abounding.