Partially or wholly lacking or deprived of the sense of hearing; unable to hear.
Old ASL sign (found in older generations prior to about mid-20th century): obsolete.
Meaning: absolutely deaf; not hearing at all. [Video courtesy of Jonathan Pokorny (coda), 2018.]
For a goose-bumping true story, enjoy the video Deaf or Dead.
First 100 words.
As you feel more comfortable with the first few hundreds of ASL signs, progress further with your vocabulary and learn signing more.