Sentence:  While most builders assemble a bottom-support system using plywood stringers and floors <WSD>egg-crated</WSD> together, then glassed into the hull, Thunderbird has switched to a molded-fiberglass grid for most of its FASTECH hulls. 
Meaning of the word marked with <WSD> tags:  To attach two surfaces together using multiple points of attachment in a lattice pattern, often in order to provide strength while minimizing weight.