1. noun
a) The sale of goods directly to the consumer; encompassing the storefronts, mail-order, websites, etc., and the corporate mechanisms, branding, advertising, etc. that support them, which are involved in the business of selling and point-of-sale marketing retail goods to the public.
She works in retail.
b) Retail price; full price; an abbreviated expression, meaning the full suggested price of a particular good or service, before any sale, discount, or other deal.
I never pay retail for clothes.
2. adjective
Of, or relating to the sale of goods or services directly to individual consumers.
3. adverb
Direct to consumers, in retail quantities, or at retail prices.
Weve shut shown our reseller unit. Were only selling retail now.
4. verb
a) To sell at retail, or in small quantities directly to customers.
a half part of this purveying is carried on within the city and is called retailing.
b) To repeat or circulate (news or rumours) to others.
Wikipedia foundation.