"collar made for a dog," 1520s, from dog (n.) + collar (n.).
dog
dog days
dog star
dog's meat
dogberry
dog-collar
doge
dog-ear
dogface
dogfight
dogfish
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}