{"era":"current","word":"lumber","meaning":"rough timber sawn into boards or planks for building","children":[{"era":"c. 1300","word":"lumber","meaning":"to move clumsily; later, heavy or useless things","children":[{"era":"pre-1100","word":"lami","meaning":"lame, crippled","children":[],"language":"Old Norse"}],"language":"Middle English"}],"language":"Modern English"}