Yes. He is an elf of Mirkwood, of presumably mixed Sindarin (on his father's side) and Silvan (on his mother's side, unless she were Sindarin) heritage.

In which language? There are many.

Quenya: macilli

Sindarin: megyl

Telerin: maklai

Doriathrin: magolin

Old Sindarin: makli

Mithren: meglin

It is Sindarin and means "My Friend"

You probably mean Eä. (The dots above the a are to signify that the vowels are spoken separately instead of blended together.)

In Sindarin, this is elvellon, plural elvellyn