look-out

详细解释:n. 警戒, 搜寻, 注意, 了望台, 监视者, 了望员, 监视哨, 景色, 前途, 远景

英语解释：

名词 look-out:

a person employed to watch for something to happen同义词：lookout, lookout man, sentinel, sentry, watch, spotter, scout, picket