The loud and repetitive sounds of conversation two tables over that keeps going on and on is an example of yammer.
When you go on and on about your past vacation and no one is really listening or caring, this is an example of when you yammer.
Origin of yammer
- Middle English yameren to lament alteration (probably influenced by Middle Dutch jammeren to lament) of earlier Middle English yomeren from Old English gēomrian, gēomerian from gēomer sad, sorrowful akin to Old High German jāmar perhaps ultimately of imitative origin
From American Heritage Dictionary of the English Language, 5th Edition
- Probably from Middle Dutch jammeren cognate and reinforced by Middle English yeoumeren (“to mourn, complain"), from Old English geomrian (“to lament"), from Ä¡eōmor (“sorrowful") possibly imitative in origin and akin to German Jammer.