The Collaborative International Dictionary
Alcaid \Al*caid"\, Alcayde \Al*cayde"\, n. [Sp. alcaide, fr. Ar. al-q[=a][=i]d governor, fr. q[=a]da to lead, govern.]
A commander of a castle or fortress among the Spaniards, Portuguese, and Moors.
The warden, or keeper of a jail. [1913 Webster] ||
n. (alternative form of alcaide English)