• to get the weather-gauge of a ship
• to cover one's eyes, to keep one's hand over one's eyes
• to clam up, to hold one's peace, to hold one's tongue, to keep a still tongue in one's head, to keep a tongue in one's head, to keep one's mouth shut, to shut one's mouth
• to hold one's nose, to pitch both nostrils shut
• to cover sy's eyes, to keep one's hand over sy's eyes