slide action

Từ điển Oxford Learners Wordfinder Dictionary

noun

action mechanism in a modern rifle or shotgun;
a back and forward motion of a sliding lever ejects the empty shell case and cocks the firearm and loads a new round (Freq. 1)
• Syn:
pump action
• Hypernyms:
action, action mechanism
• Part Holonyms:
rifle, shotgun, scattergun