sip

verb4

1. •
   To drink slowly, small mouthfuls at a time.

   • A waiter brought his aperitif, which was a small scotch and soda, and as he sipped it gratefully he sighed. — 1963
2. •
   To drink a small quantity.

   • [She] rais'd it to her mouth with sober grace; / Then, sipping, offered to the next in place. — 1697
3. •
   To taste the liquor of; to drink out of.

   • They skim the floods, and sip the purple flowers. — 1697
4. •
   (figurative) To consume slowly.

   • Sales of lightbulbs which sip electricity, and whose increased cost in the shops is easily paid for over their lifetime, used to double every year; in 1990/1991, they leapt sevenfold. — 1995

noun2

1. •
   A small mouthful of drink.

   • So order one more coffee / Have another sip of wine / We can go on talking / Until it's disco closing time — 1977
2. •
   An event at which people drink alcohol in small, usually subintoxicating amounts.

   • Earl is always a good time. His appearance at parties, whether it's a smart cocktail sip or a basement gig, is mandatory. — 1985

noun2

1. •
   Acronym of single-issue publication.
2. •
   Acronym of structural insulated panel.