1. • noun - the first event in a series
   • noun - a person who unfastens or unwraps or opens
   • noun - a hand tool used for opening sealed containers (bottles or cans)
   • adj - affording unobstructed entrance and exit
   • adj - affording free passage or access
   • adj - with no protection or shield
   • adj - open to or in view of all
   • adj - used of mouth or eyes
   • adj - not having been filled
   • adj - accessible to all
   • adj - not defended or capable of being defended
   • adj - (of textures) full of small openings or gaps
   • adj - having no protecting cover or enclosure
   • adj - (set theory) of an interval that contains neither of its endpoints
   • adj - not brought to a conclusion
   • adj - not sealed or having been unsealed
   • adj - without undue constriction as from e.g. tenseness or inhibition
   • adj - ready or willing to receive favorably
   • adj - open and observable
   • adj - not requiring union membership
   • adj - possibly accepting or permitting
   • adj - affording free passage or view
   • adj - openly straightforward and direct without reserve or secretiveness
   • adj - ready for business
2. • One that opens, especially a device used to cut open cans or pry up bottle caps.
   • Games.
   • The player who starts the betting in cards.
   • The first act in a theatrical variety show.
   • The first game in a series.
3. • adj - affording unobstructed access, passage, or view
   • adj - to cause to become open [v -ED, -ING, -S] : OPENABLE

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