Having a consistency or texture similar to jam; sticky or thick. The sauce had a jammy texture that clung to the spoon.
Fortunate or lucky, often in a way that seems undeserved. He was jammy enough to win the lottery twice in one year.
Of wine, beer, or other beverages: tasting strongly of sweet, ripe fruit, reminiscent of jam. The Merlot was jammy, bursting with flavors of blackberry preserves.