bloom

1 bloom /ˈbluːm/ noun
plural blooms
1 bloom
/ˈbluːm/
noun
plural blooms
Britannica Dictionary definition of BLOOM
1 
[count] : 1flower 1
2 
[count] : a time period in which a plant has many open flowers
3 
[noncount] : a state or time of beauty, health, and strength

come in/into bloom

— see 1come

in bloom

or in full bloom
: having flowers
2 bloom /ˈbluːm/ verb
blooms; bloomed; blooming
2 bloom
/ˈbluːm/
verb
blooms; bloomed; blooming
Britannica Dictionary definition of BLOOM
[no object]
1 
: to produce flowers
2 
: to change, grow, or develop fully