What is the meaning of ?

The lowercase letter alef, used in most Egyptian transliteration schemes to represent the sound of the hieroglyph

A
.

the Egyptian vulture (Neophron percnopterus)

a bird in general

intensifying or emphasizing particle, indeed

marks a statement as hypothetical or contrafactual

also, and

to enter or tread (a place)

to tread

Only used in jrj ꜣ r gs; possibly a variant of the verb ‘to tread’ above.

Source: wiktionary.org