To understand what someone is saying, to follow something someone said, or a concept that is being put forth. Similar words include gleaned and gleaning.
I glean that 2+2=4
I can't glean a singlething that moron was saying.
To show a grasp or, comprehension, of a subject matter, material, or, functionality, with limited information, or time to fully understand or totally absorb, what it is we're seeing or doing.
Can be an intuitive first impression of a person place or thing
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.