Meaning of "epidural injection"

an epidural anesthetic, used especially in childbirth to produce loss of sensation below the waist.
on or around the dura mater, in particular (of an anesthetic) introduced into the space around the dura mater of the spinal cord.

ep·i·du·ral

ĕp′ĭ-do͝or′əl, -dyo͝or′-
ep·i·du·ral  (ĕp′ĭ-do͝or′əl, -dyo͝or′-)
adj.
Located on or over the dura mater.
n.
An injection into the epidural space of the spine.

epidural

ˌɛpɪˈdjʊərəl
epidural (ˌɛpɪˈdjʊərəl)
adj
(Anatomy) Also: extradural upon or outside the dura mater
n
(Surgery)
a. injection of anaesthetic into the space outside the dura mater enveloping the spinal cord
b. anaesthesia induced by this method
[C19: from epi- + dur(a mater) + -al1]

ep•i•du•ral

(ˌɛp ɪˈdʊər əl, -ˈdyʊər-)
ep•i•du•ral (ˌɛp ɪˈdʊər əl, -ˈdyʊər-) adj.
1. situated on or outside the dura mater.
2. of or pertaining to the insertion of an anesthetic into the lumbar spine in the space between the spinal cord and dura mater, which blocks sensation in the body from that point downward: epidural anesthesia.
n.
3. an epidural injection of anesthesia; spinal anesthesia.
[1880–85; epi- + dur (a mater) + -al1]