Noun

(en noun)

An act or instance of making or becoming open.

The daily openings of the day lily bloom gives it its name.

He remembered fondly the Christmas morning opening of presents.

Something that is open.

A salamander darted out of an opening in the rocks.

He slipped through an opening in the crowd.

An act or instance of beginning.

There have been few factory and store openings in the US lately.

Their opening of the concert with ''Brass in Pocket'' always fires up the crowd.

Something that is a beginning.

# The first performance of a show or play by a particular troupe.

They were disappointed at the turnout for their opening , but hoped that word would spread.

# The initial period a show at an art gallery or museum is first opened, especially the first evening.

# The first few measures of a musical composition.

# (chess) The first few moves in a game of chess.

John spends two hours a day studying openings , and another two hours studying endgames.

A vacant position, especially in an array.

Are there likely to be any openings on the Supreme Court in the next four years?

# A time available in a schedule.

If you'd like to make a booking with us, we have an opening at twelve o'clock.

The only two-hour openings for the hockey rink are between 1AM and 5AM.

# An unoccupied employment position.

We have an opening in our marketing department.

An opportunity, as in a competitive activity.

* {{quote-news

, year=2010 , date=December 29 , author=Sam Sheringham , title=Liverpool 0 - 1 Wolverhampton , work=BBC citation , page= , passage=The Reds carved the first opening of the second period as Glen Johnson's pull-back found David Ngog but the Frenchman hooked wide from six yards. }}

Noun

(en noun)

A long, narrow container, open on top, for feeding or watering animals.

One of Hank's chores was to slop the pigs' trough each morning and evening.

Any similarly shaped container.

# (Australia, New Zealand) A rectangular container used for washing or rinsing clothes.

Ernest threw his paint brushes into a kind of trough he had fashioned from sheet metal that he kept in the sink.

A short, narrow canal designed to hold water until it drains or evaporates.

There was a small trough that the sump pump emptied into; it was filled with mosquito larvae.

(Canada) A gutter under the eaves of a building; an eaves trough.

The troughs were filled with leaves and needed clearing.

(agriculture, Australia, New Zealand) A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel.

A long, narrow depression between waves or ridges; the low portion of a wave cycle.

The buoy bobbed between the crests and troughs of the waves moving across the bay.

The neurologist pointed to a troubling trough in the pattern of his brain-waves.

(meteorology) A linear atmospheric depression associated with a weather front.