{"era":"current","word":"flap","meaning":"to move or beat loosely or quickly","children":[{"era":"1200s","word":"flappen","meaning":"to move or strike with a loose, repeated motion","children":[{"era":"pre-1100","word":"flap","meaning":"a sound-symbolic base suggesting sudden beating or movement","children":[],"language":"imitative base"}],"language":"Middle English"}],"language":"Modern English"}