Spondaic or Spondee refers to a two-syllable foot that is comprised of two accented syllables or words with equal stress on each syllable.
Example
An example from “In Memoriam” by Alfred Lord Tennyson
“When the blood creeps and the nerves prick”
Words
bread box, shoeshine
[adj] (prosody) of or consisting of spondees; "spondaic hexameter"