unfold or be unfolded; spread out
the eagle opened its wings and circled up into the air
the tail looks like a fan when it is opened out fully
the flowers only open during bright weather
make formally ready for customers, visitors, or business
she raised £731 by opening her home and selling coffee and tea
formally establish or begin (a new business or enterprise)
she began to teach and opened her own school
we opened up a branch in Madrid
make (something) present, available, or accessible
a civil war there has opened the possibility of a peace treaty with the Federation
(of a piece of writing or music) begin
the chapter opens with a discussion of Anglo-Irish relations
break the conducting path of (an electric circuit)
the switch opens the motor circuit