k

k noun
or K /ˈkeɪ/
plural k's or ks or K's or Ks
k
noun
or K /ˈkeɪ/
plural k's or ks or K's or Ks
Britannica Dictionary definition of K
1 
: the 11th letter of the English alphabet
[count]
[noncount]
2 
[count] plural K
a  informal : thousand
3 
[count] baseball, informal : strikeout