\Al*caid"\, Alcayde \Al*cayde"\ ([a^]k*k[=a]d"; Sp.
[aum]l*k[aum]*[-e]"d[asl]), n. [Sp. alcaide, fr. Ar.
al-q[=a][=i]d governor, fr. q[=a]da to lead, govern.]
1. A commander of a castle or fortress among the Spaniards,
   Portuguese, and Moors.
2. The warden, or keeper of a jail.