pineapple
The pineapple is not the tropical fruit (virtually unknown in mediaeval Europe) but litterally the “apple” found on a fir tree, otherwise known as a fir cone or pine cone. A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P276 Wade suggests that it symbolises “life”, perhaps due to the promise of new birth from the seeds contained with the cone. The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P130