At. Hold left flat hand, back up, pointing partly up; strike the back with right flat hand.
Fr. à; Ger. an, auf.
Attempt. See Try.
Attention (A command). See Call.
Aunt. Sign Father (or Mother) and Sister. Or, sign Woman with right, then tuck compressed right, point down, under left arm pit. (R. B.)
Fr. la tante; Ger. die Tante.
Aurora or Northern Lights. Both hands, backs down,
half closed, thumb and finger tips together, raised very high and spread with a sweep to indicate flashes. It should be done facing north. It is helped if the hands when at the highest are swung apart in an arch.