v. & n.
v. 1 intr. & tr. make or cause to make a succession of short light ringing sounds. 2 intr. colloq. urinate.
n. 1 a tinkling sound. 2 Brit. colloq. a telephone call (will give you a tinkle on Monday). 3 colloq. an act of urinating.
[ ME f. obs. tink to chink (imit.) ]