#1
open v. [
open up] cause to open or to become open; "Mary opened the car door"
. wn #2
open v. [
open up] start to operate or function or cause to start operating or functioning; "open a business"
. wn #3
open v. [
open up] become open; "The door opened"
. wn #4
open v. begin or set in action, of meetings, speeches, recitals, etc.; "He opened the meeting with a long speech"
. wn #5
open v. [
unfold, spread, spread out] spread out or open from a closed or folded state; "open the map"; "spread your arms"
. wn