[Mars] Home Plate is a plateau roughly 90 m across within the Columbia Hills, Mars. It is informally named for its similarity in shape to a baseball home plate. Home Plate is a rocky outcrop that appears to show layered features. The plateau has been extensively studied by Spirit, one of the Mars Exploration Rovers, since 2006. The rover be...
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http://en.wikipedia.org/wiki/Home_Plate_(Mars)

(from the article `baseball`) ...(playing offense). The nine fielders take up assigned positions in the playing field; one fielder, called the pitcher, stands on a mound in the ...
Found on
http://www.britannica.com/eb/a-z/h/64

Home airfield.
Found on
http://www.f-16.net/glossary-H.html

[
n] - (baseball) base consisting of a rubber slab where the batter stands
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http://www.webdictionary.co.uk/definition.php?query=home%20plate

Five-sided rubber that batters stand next to during their at-bats. For a run to score, a runner must touch home plate, which is most likely to occur when a runner is in scoring position.
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https://coachingkidz.com/baseball-terminology-the-ultimate-guide-to-terms-u

Refers to the initial base of the field, generally, a five-sided base made of white rubber, and is nearby to a box of batsman.
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https://www.888sport.com/blog/glossary-sports-terms/glossary-baseball-terms
noun (baseball) base consisting of a rubber slab where the batter stands; it must be touched by a base runner in order to score; `he ruled that the runner failed to touch home`
Found on
https://www.encyclo.co.uk/local/20974

the base at which the batter stands and which a base runner must reach safely in order to score a run, typically a five-sided slab of whitened rubber set at ground level at the front corner of the diamond. Also called
Found on
https://www.infoplease.com/dictionary/home-plate
No exact match found.