Rare, chiefly falconry: to train or accustom a hawk to humans.
Definitionen
To train or accustom (a hawk) to the presence of humans; to tame (archaic, falconry). The falconer spent weeks mannering the young bird before its first hunt.
Archaic/dialect use meaning ‘somewhat, rather’
Definitionen
To some extent; somewhat; rather (archaic or dialect). I was manner weary after the long journey.