Eighteen

[ey-teen] /ˈeɪˈtin/

noun
1.
a cardinal number, ten plus eight.
2.
a symbol for this number, as 18 or XVIII.
3.
a set of this many persons or things.
adjective
4.
amounting to 18 in number.
/ˈeɪˈtiːn/
noun
1.
the cardinal number that is the sum of ten and eight and the product of two and nine See also number (sense 1)
2.
a numeral, 18, XVIII, etc, representing this number
3.
the amount or quantity that is eight more than ten
4.
something represented by, representing, or consisting of 18 units
5.
(functioning as singular or pl) a team of 18 players in Australian Rules football
determiner
6.

late 14c., eightene, earlier ahtene (c.1200), from Old English eahtatene, eahtatyne; see eight + -teen. Cf. Old Saxon ahtotian, Dutch achttien, Old High German ahtozehan, German achtzehn, Old Norse attjan, Swedish adertån.

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Eighter
[eyt] /eɪt/ noun 1. a cardinal number, seven plus one. 2. a symbol for this number, as 8 or VIII. 3. a set of this many persons or things, as the crew of an eight-oared racing shell. 4. a playing card the face of which bears eight pips. 5. Informal. adjective 6. amounting to eight […]