noun
playground slide
The ordinary everyday meaning: a slide in a park, playground, schoolyard, or similar place.
子どもたちが公園の滑り台で遊んでいる。
The children are playing on the slide in the park.
妹は何度も滑り台を滑った。
My little sister went down the slide again and again.
noun
ship launching platform; slipway; sliding ways
Specialized use for a sloped structure or ways used to launch a ship into the water; much less common than the playground meaning.
造船では、船を海へ下ろす斜面を滑り台と呼ぶことがある。
In shipbuilding, a slope used to lower a ship into the sea may be called a slipway.