A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

swing both ways • swing either way
swing both ways—(sl.) have both homosexual and hetero-
sexual tastes (also: plug in both ways): Rumor has it that their
lead singer swings both ways.
Note: 
The expression does not correlate in meaning with the
phrase door swings both ways, the—(U.S.) the same principle
applies in both cases (usually used to attack hypocritical actions):
As Howard used to say, “Hey, that door swings both ways.”
We are expected to share our secrets with them, too.
swing either way —said of a situation when it is impossible
to predict which of two results it will have: The market could
swing either way depending on the news from the Middle
East.
swing man • swing voter
swing man —
1
. a musician who plays jazz with a swing — a
style with a flowing but strongly compelling rhythm: The best
alto player among the swingmen was Johnny Hodges. 2. (U.S.)
the mounted herdsman who keeps a moving herd of cattle in
order: The herd trailed along behind the leaders … guarded
by outriders, known as swing men. 3. (sl.) a drug supplier:
Now he [pusher] is called the connection, the bagman, the
swing man, the dealer.
swing voter—(U.S.) the independent voter that often deci-
sively influences the result of a ballot: He is expected to join
Mr. Daane as a “swing voter,” leaving Mr. Martin with only
one conservative colleague.
Swiss mountain pine • Swiss pine
Swiss mountain pine —a low pyramidal tree of central
Europe: The Swiss mountain pine (Pinus mugo) is best known
to many Americans in its dwarf variety, the mugho pine (Pinus
mugo mughus).
Swiss pine —(also: Swiss stone pine) a tall Eurasian pine (Pinus
cembra): A pine tree is estimated to live for 
1
200 years, and
the Swiss Pine, in the Alps, survived the last Ice Age.