I answered this elsewhere today as - Dottie
It was but a stab , have since found this.
Dotter, v. to stagger, totter, walk unsteadily
or as if paralysed ; to become stupid with
age, &c. — n. a totter, a stagger. Cf. Doiter.
Dottered, ppl. adj. doting in old age.
Dotterel, n. a silly person, a dotard.
Dottet, ppl. adj. stupefied. Cf. Doit.
Dottie, v. to 'dotter.'