val·vate 
(vălvāt′)
(vălvāt′)adj.
1. Having valvelike parts.
2. Botany
a. Meeting at the edges without overlapping, as some petals do.
b. Opening by valves, as the capsule of a lily or iris.
- keep eyes peeled
- keep fingers crossed
- keep head
- keep/hold (one's) peace
- keeping
- keep/know (one's) place
- keep kosher
- keep nose clean
- keep nose to the grindstone
- keep off
- keep (one's) chin up
- keep one's chin up
- keep one's end up
- keep one's eyes open
- keep (one's) eyes open/peeled
- keep one's eyes peeled
- keep one's fingers crossed
- keep (one's) head
- keep one's head
- keep (one's) nose clean
- keep one's nose clean
- keep one's nose to the grindstone
- keep one's peace
- keep one's place
- keep (one's) powder dry