cocktail dress

: a usually iced drink of wine or distilled liquor mixed with flavoring ingredients

: something resembling or suggesting such a drink as being a mixture of often diverse elements or ingredients

: a mixture of agents usually in solution that is taken or used especially for medical treatment or diagnosis

: of, relating to, or set aside for cocktails

: designed for semiformal wear

: a horse with its tail docked

: to make or set straight

: to arrange (troops, equipment, etc.) in a straight line and at proper intervals

: to prepare for use or service

: apparel, clothing

: an outer garment (as for a woman or girl) usually consisting of a one-piece bodice and skirt

: covering, adornment, or appearance appropriate or peculiar to a particular time

: suitable for a formal occasion

: requiring or permitting formal dress

: relating to or used for a dress