Term: crack: a long narrow opening
Broader: opening: an open or empty space in or between things | Unrelated: guillemot: small black or brown speckled auks of northern seas
Broader: opening: an open or empty space in or between things | Unrelated: molecular biology: the branch of biology that studies the structure and activity of macromolecules essential to life (and especially with their genetic role)
Broader: opening: an open or empty space in or between things | Unrelated: dungeon: a dark cell (usually underground) where prisoners can be confined
Broader: opening: an open or empty space in or between things | Unrelated: center stage: a position of prominence or importance
Broader: opening: an open or empty space in or between things | Unrelated: lysiloma: small genus of tropical American trees and shrubs with pinnate leaves and flat straight pods
Broader: opening: an open or empty space in or between things | Unrelated: stakeout: surveillance of some place or some person by the police (as in anticipation of a crime)
Broader: opening: an open or empty space in or between things | Unrelated: nautical mile: a unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude
Broader: opening: an open or empty space in or between things | Unrelated: asian country: any one of the nations occupying the Asian continent
Broader: opening: an open or empty space in or between things | Unrelated: football play: (American football) a play by the offensive team
Broader: opening: an open or empty space in or between things | Unrelated: absurd: a situation in which life seems irrational and meaningless; --Albert Camus