cobwork

Century Dictionary and Cyclopedia

1. n. A structure made of logs laid with their alternate layers at right angles and with the ends secured to the layers above and below by dovetailing.

Wiktionary

1. n. construction work made of logs, etc., laid horizontally, with the ends dovetailed together at the corners, and in marine work often surrounding a central space filled with stones

GNU Webster's 1913

1. adj. Built of logs, etc., laid horizontally, with the ends dovetailed together at the corners, as in a log house; in marine work, often surrounding a central space filled with stones.