calyptra
noun
ca·lyp·tra kə-ˈlip-trə 
: a hoodlike structure in a plant
especially : haploid tissue forming a membranous hood over the capsule in a moss
Word History
Etymology
New Latin, from Greek kalyptra veil, from kalyptein to cover — more at hell
First Known Use
circa 1753, in the meaning defined above
- strike (into)
- strike (out)
- strike (someone) as
- strike (someone) dead
- strike a balance
- strike a bargain
- strike a blow
- strike a chord in
- strike a chord with
- strike a deal
- strike a nerve
- strike a raw nerve
- strike against
- strike as
- strike back
- strike below
- strike benefit
- strike board
- strike dead
- strike down
- strike fault
- strike fear into one's heart
- strike fear into the hearts of
- strike force
- strike gold