n. 打谷机, 脱粒机

Thrasher \Thrash"er\, Thresher \Thresh"er\, n.
1. One who, or that which, thrashes grain; a thrashing
machine.

2. (Zo["o]l.) A large and voracious shark ({Alopias vulpes}),
remarkable for the great length of the upper lobe of its
tail, with which it beats, or thrashes, its prey. It is
found both upon the American and the European coasts.
Called also {fox shark}, {sea ape}, {sea fox}, {slasher},
{swingle-tail}, and {thrasher shark}.

3. (Zo["o]l.) A name given to the brown thrush and other
allied species. See {Brown thrush}.

{Sage thrasher}. (Zo["o]l.) See under {Sage}.

{Thrasher whale} (Zo["o]l.), the common killer of the
Atlantic.

Song \Song\ (s[o^]ng; 115), n. [AS. song, sang, fr. singan to
sing; akin to D. zang, G. sang, Icel. s["o]ngr, Goth. saggws.
See {Sing}.]
1. That which is sung or uttered with musical modulations of
the voice, whether of a human being or of a bird, insect,
etc. ``That most ethereal of all sounds, the song of
crickets.'' --Hawthorne.

2. A lyrical poem adapted to vocal music; a ballad.

3. More generally, any poetical strain; a poem.

The bard that first adorned our native tongue
Tuned to his British lyre this ancient song.
--Dryden.

4. Poetical composition; poetry; verse.

This subject for heroic song. --Milton.

5. An object of derision; a laughingstock.

And now am I their song, yea, I am their byword.
--Job xxx. 9.

6. A trifle; an insignificant sum of money; as, he bought it
for a song. ``The soldier's pay is a song.'' --Silliman.
[1913 Webster +PJC]

{Old song}, a trifle; nothing of value. ``I do not intend to
be thus put off with an old song.'' --Dr. H. More.

{Song bird} (Zo["o]l.), any singing bird; one of the
{Oscines}.

{Song sparrow} (Zo["o]l.), a very common North American
sparrow ({Melospiza fasciata}, or {Melospiza melodia})
noted for the sweetness of its song in early spring. Its
breast is covered with dusky brown streaks which form a
blotch in the center.

{Song thrush} (Zo["o]l.), a common European thrush ({Turdus
musicus}), noted for its melodius song; -- called also
{mavis}, {throstle}, and {thrasher}.

Syn: Sonnet; ballad; canticle; carol; canzonet; ditty; hymn;
descant; lay; strain; poesy; verse.