W4H4I1R1R1I1N1G2
15 points
WHIRRING is validvalid
WHIR, to move with a buzzing sound [v] / WHIRR, to whir [v]
the act of turning with a humming noise [n -S]
WHIR, to move with a buzzing sound [v] / WHIRR, to whir [v]
the act of turning with a humming noise [n -S]