An itinerant tinsmith and mender of household utensils made of metal.

(usually with "little") A mischievous person, especially a playful, impish youngster.

Someone who repairs, or attempts repair, on anything mechanical, or who invents such devices; one who tinkers; a tinkerer.

The act of repair or invention. (Can we add an example for this sense?)

Any of various fish: chub mackerel, silverside, skate, or young mackerel about two years old.

A bird, the razor-billed auk.

(intransitive) To work as a tinker.

(transitive, intransitive) To fiddle with something in an attempt to fix, mend or improve it, especially in an experimental or unskilled manner.