| keep lookout | 1.12 | A few kept a lookout for relatives to take them in. | ||
| post lookout | 0.53 | The troops posted a lookout for the night. | ||
| man lookout | 0.33 | Troops manned rooftop lookouts. | ||
| stand lookout | 0.26 | A few girls stood lookout and shrieked when they caught sight of the boys. |