Refers to a small, low hill or mound, often in geographical or descriptive contexts.
その小丘の上に小さな神社がある。
There is a small shrine on top of that hillock.
なだらかな小丘が続く風景。
A landscape of gentle, rolling small hills.
axon hillock
Compound of 小 (small) and 丘 (hill). The reading しょうきゅう follows the on'yomi of both characters.