A father, a male parent.
"The audiophile immediately rejected the new classical album because the liner notes labeled it as 'dad,' revealing that the recording was digitally captured and mixed in analog before final mastering."
A lump or piece.
A designation on prerecorded compact discs indicating that the contents were recorded in digital but mixed in analog before being mastered to a digital medium; compare AAD, ADD, DDD.
In plain English: A dad is your father, the man who is married to your mom and helps raise you.
"My dad took me to the park this weekend."
Usage: Use "dad" as a noun to refer affectionately to one's father or an older male figure. Do not use it to describe audio recording formats, which are indicated by codes like AAD or DDD.
To throw against something; to dash.
"The child accidentally kicked the ball, and it dad-ed hard off the brick wall."
In plain English: To dad something means to treat it with care and attention, usually by giving it regular food or water.
"The basketball player dad the ball against the backboard with force."
Usage: Do not use "dad" as a verb to mean throwing or dashing something against an object, as this is incorrect. The word "dad" functions only as a noun referring to a father.
One's father.
"My dad called to ask if I could come over for dinner tonight."
The word "dad" likely originated from an unrecorded Middle English form around 1500, possibly borrowing the sound directly to describe a father figure. Its ultimate roots are uncertain but may be Celtic or related to Russian words for uncle and grandfather that were created by imitating sounds.