Heraldic Puns abound in Cheshire - Bostock

In the the third group, wherein part of the bearer's name is shown by the charges, it is possible that Bostock makes similar play with his silver fesse having its ends cut off, for this is no true fesse, but may be designed to suggest a conventionalised stock of a tree. A very tenuous pun but worthy of consideration.

Bostock
Sable a fesse hummette Argent.