firstborn

Từ điển Oxford Learners Wordfinder Dictionary

I - noun

the offspring who came first in the order of birth
• Syn:
eldest
• Derivationally related forms:
eldest (for: eldest)
• Hypernyms:
offspring, progeny, issue

II - adjective

first in order of birth
- the firstborn child
• Syn:
eldest
• Similar to:
first
• Derivationally related forms:
eldest (for: eldest)