jiē​yìng

rescue

接应 (接應) jiē​yìng
rescue verb
to come to the rescue or provide reinforcements to someone in a dangerous or difficult situation

Reinforcements arrived in time to relieve the besieged troops.

support verb
to provide tactical or logistical support, often in a coordinated effort or sequence

You guys go inside to search; I'll provide backup outside.

Frequency

Movie subtitles
1.55 per million appears in 1% of films
Written text
3.95 per million

Sources

Definitions
CC-CEDICT