01 a. Having the outer tail feathers longer than the median ones; swallow-tailed; -- said of many birds.
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1.
Having the outer tail feathers longer than the median ones; swallow-tailed; -- said of many birds.(Zool.)
Phrases & compounds
Fork-tailed flycatcher —
a tropical American flycatcher (Milvulus tyrannus).
Fork-tailed gull —
a gull of the genus Xema, of two species, esp. X. Sabinii of the Arctic Ocean.
Fork-tailed kite —
a graceful American kite (Elanoides forficatus); -- called also swallow-tailed kite.