'Dotty' definitions:

Definition of 'dotty'

From: WordNet
adjective
Informal or slang terms for mentally irregular; "it used to drive my husband balmy" [syn: balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky]
adjective
Intensely enthusiastic about or preoccupied with; "crazy about cars and racing"; "he is potty about her" [syn: crazy, wild, dotty, gaga]

Definition of 'Dotty'

From: GCIDE
  • Dotty \Dot"ty\, a. [From 2d Dot.]
  • 1. Composed of, or characterized by, dots. [Webster 1913 Suppl.]
  • 2. [Perh. a different word; cf. Totty.] Unsteady in gait; hence, feeble; half-witted. [Eng.] [Webster 1913 Suppl.]