Boyd’s Bible Dictionary:
(a follower out). In O. T. a position of dignity (Gen. 37:36, marg.; 1 Kings 2:25,34). Even in Mark 6:27, the executioner, belonged to the king’s bodyguard.
Concise Bible Dictionary:
This word does not occur in the Old Testament except in the margin. In three places persons are pointed out as “captain of the guard,” who in the margin are called “chief of the executioners or slaughter men” (Gen. 37:36; Jer. 39:9; Dan. 2:14). In Solomon’s day Benaiah the chief of the army was called to fulfill this office (1 Kings 2:25,34,46), though doubtless the “chief” had others under him that actually carried the king’s word into execution, unless the persons were of high rank. In Mark 6:27 Herod Antipas called to an executioner, or one of his guard, to behead John the Baptist.
Strong’s Dictionary of Greek Words:
Transliteration:
spekoulator
Meaning:
of Latin origin; a speculator, i.e. military scout (spy or (by extension) life-guardsman)