Tirl : to make a rattling sound (eg with a door latch). Famously, the door giving entry to Mary of Guise’s house had neither bell nor knocker, but was provided with a pin. No hero ever came to his lady love’s door but he ‘tirled at the pin’.

Popinjay : a parrot, from Middle English papejah.

Ken : know

Kevil : a small piece of wood used for casting lots.

Gin : if