(aeronautics) Any aerodynamic effects occurring due to a vehicle's body or appendages moving in close proximity to the ground.

Glass having a rough, flat surface produced by abrasion or etching.

A species of pangolin, Smutsia temminckii (syn. Manis temminckii).

(sports) A rule regarding play on a specific field, course, or court. / (idiomatic, usually in the plural) The basic rules or standards; whatever someone must know before proceeding.

A place or region where animals go to breed. / (figuratively) A place or institution seen as creating large numbers of a stated thing, type of person, etc.

Used other than figuratively or idiomatically: see feet, on, ground. / (usually with have or with) Used to indicate behavior or manner characteristic of a practical person

scarce, or difficult to find.

An area of water used for fishing (usually a sea area).

(law, real estate) Rent paid under a ground lease, usually long-term or in perpetuity, for a surface right or estate in land where the landowner (surface owner) and the owner of improvements (ground lessor) are separate; the improvements are effectively security for the payment of the rent.

A cemetery or graveyard.