The name Sisera in the Bible
Sisera is the commander of the army of Jabin, the king of Canaan who attacks Israel (Judges 4:2). Judge Deborah and general Barak mount a highly successful counter attack, but Sisera himself dies at the hand of a lady named Jael.
Etymology of the name Sisera
BDB Theological Dictionary suggests that the extension -sira is common for Hittite names but gives no meaning. Fuerst's Hebrew & Chaldee lexicon to the Old Testament draws towards a foreign word meaning meditator and NOBSE Study Bible Name List reads Meditation as well.
To a Hebrew audience, however, the first part of the name Sisera may have reminded of the word סיס (sis), meaning swallow or horse (Note that some later versions of Jeremiah 8:7 use the form סיס (sis)):
The -ra part of the name may have sounded as if it came from the verb ראה (ra'a), meaning to see or look:
The original meaning of the name Sisera may have been Mediation, but to a Hebrew audience the name Sisera may have sounded as something like Keen And Swift or Hawk-Eye.