浮うき石いし

noun

pumice stone

A light, porous volcanic stone used for scrubbing or as a building material.

• かかとの角かく質しつを浮うき石いしでこする。

  I scrub the calluses on my heels with a pumice stone.

noun

loose rock; loose stone

A rock or stone that is not firmly fixed, often found on slopes or in construction contexts.

• 登と山ざん道どうには浮うき石いしが多おおいので注ちゅう意いしてください。

  Be careful, as there are many loose rocks on the mountain trail.

noun

floating group; group without a base

In the game of Go, a group of stones that lacks a secure base and is vulnerable to attack.

• その黒くろ石いしは浮うき石いしなので、白しろに攻せめられやすい。

  Those black stones are a floating group, so they are easily attacked by White.