as light as thistle down

as large as life as lean as a rake as lief as light as thistledown as like as an apple to an oyster as like as chalk and cheese as like as not as like as two peas as like as two peas in a pod as likely as not as lively as a cricket as lively as a grig

device coordinate system device descriptor block device descriptor module device diagnostic program device directive device directory device driver device driver routine device end device flag