opener (Adjective) — Affording unobstructed entrance and exit; not shut or closed. ex. "they left the door open" ex. "an open door"
opener (Adjective) — Affording free passage or access. ex. "open drains" ex. "the road is open to traffic" ex. "open ranks"
opener (Adjective) — With no protection or shield. ex. "open to the weather" ex. "an open wound"
opener (Adjective) — Available to or viewable by the public. ex. "an open protest" ex. "an open letter to the editor"
opener (Adjective) — Used of mouth or eyes. ex. "keep your eyes open"
opener (Adjective) — Not having been filled. ex. "the job is still open"
opener (Adjective) — Accessible to all. ex. "open season" ex. "an open economy"
opener (Adjective) — Not defended or capable of being defended. ex. "an open city" ex. "open to attack"
opener (Adjective) — (of textures) full of small openings or gaps. ex. "an open texture"
opener (Adjective) — Having no protecting cover or enclosure. ex. "an open boat" ex. "an open fire" ex. "open sports cars"
opener (Adjective) — (set theory) of an interval that contains neither of its endpoints.
opener (Adjective) — Not brought to a conclusion; subject to further thought. ex. "an open question"
opener (Adjective) — Not sealed or having been unsealed. ex. "the letter was already open"
opener (Adjective) — Without undue constriction as from e.g. tenseness or inhibition. ex. "the clarity and resonance of an open tone" ex. "her natural and open response"
opener (Adjective) — Ready or willing to receive favourably. ex. "open to the proposals"
opener (Adjective) — Observable; not secret or hidden. ex. "open ballots"
opener (Adjective) — Not requiring union membership. ex. "an open shop employs nonunion workers"
opener (Adjective) — Possibly accepting or permitting. ex. "open to interpretation" ex. "an issue open to question"
opener (Adjective) — Affording free passage or view. ex. "open waters" ex. "the open countryside"
opener (Adjective) — Openly straightforward and direct without reserve or secretiveness. ex. "an open and trusting nature"
opener (Adjective) — Ready for business. ex. "the stores are open"
opener (Noun) — The first event in a series. ex. "she played Chopin for her opener" ex. "the season's opener was a game against the Yankees"
opener (Noun) — A person who unfastens, unwraps or opens.
opener (Noun) — A hand tool used for opening sealed containers (bottles or cans).