English

Verb

yawning

1. present participle of yawn

Noun

yawning ‎(plural yawnings)

1. The action of the verb yawn.

Adjective

yawning ‎(comparative more yawning, superlative most yawning)

1. That yawns or yawn.

   yawning commuters;  travelers yawning in the queue‎

2. (figuratively) Wide open.
   • 2013 August 3, “The machine of a new soul”, in The Economist, volume 408, number 8847:

     The yawning gap in neuroscientists’ understanding of their topic is in the intermediate scale of the brain’s anatomy. Science has a passable knowledge of how individual nerve cells, known as neurons, work. It also knows which visible lobes and ganglia of the brain do what.

   a yawning chasm;  the shark's yawning jaws‎