Synonyms to gimlet eye

eagle eye, X-ray eye, custodianship, custody, eye, guard, guardedness, guardianship, invigilation, keen eye, lookout, monitoring, observance, peeled eye, penetrating eye, proctoring, prudence, qui vive, scrutiny, sharp eye, stewardship, surveillance, tab, vigil, vigilance, wariness, watch, watch and ward, watchful eye, watchfulness, watching, weather eye, cover, defense, lee, preservation, protection, protective custody, refuge, safekeeping, safety, shade, shadow, shelter