To talk idly or incessantly, as about trivial matters.(verb-intransitive)
Idle talk; chatter.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "gab" in a sentence
"The notion that our leaders might have the brains and skill to maturely resolve conflicts with the gift of gab is astounding and long overdue."
"The natives in the vicinity of Perth generally use the word gab-by, or kuyp-e, for water, but those inhabiting a district only twelve or fourteen miles distant from Perth adopt the word kow-win; the word used by the natives in the vicinity of Adelaide in South Australia for water is kauw-ee."
"For your gift of the gab is a caution -- are splendid;"