cause or allow (liquid) to flow over the edge of its container, especially unintentionally

you'll spill that tea if you're not careful

azaleas spilled cascades of flowers over the pathways

reveal (confidential information) to someone

there's nothing worse than friends who spill secrets

she ought not to be spilling out her troubles to you

cause to fall off a horse or bicycle

the horse was wrenched off course, spilling his rider

(in the context of ball games) drop (the ball)

let (wind) out of a sail, typically by slackening the sheets