Meaning: On the subject of; concerning.
Context e.g. "No, she wants to talk about your kitties, not pooches."
Approximately; almost or nearly; used to indicate that a number, amount, time, etc., is not exact or certain.
ASL Learner tip: similar sign for AROUND (see one of the multiple signs).
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.