unfree
V-shaped
Y-shaped
akimbo
angular
at bay
aux abois
bent
between two fires
crooked
crotched
endangered
forked
furcal
furcate
geniculate
geniculated
hooked
imperiled
in a corner
in a predicament
in danger
in desperate case
in extremis
in jeopardy
jagged
jeopardized
knee-shaped
on the spot
pointed
saw-toothed
sawtooth
serrate
sharp
sharp-cornered
threatened
treed
up a stump
up a tree
zigzag