ADJ

left, right
front
back, hind
long
short, stumpy
beautiful, good, shapely
muscled, muscular, powerful, strong
skinny, spindly, thin
fat
bandy
hairy
bare
artificial, wooden
bad, stiff
broken, fractured
lame, withered
He sat down with his lame leg outstretched
tired
She crossed the finish line on tired legs
fresh
They don't train the day before a match to ensure they have fresh legs
outstretched

VERB + LEG

bend
brace
He put his back against the car, braced his legs and pushed
straighten
cross
I moved the chair away from the table so I could cross my legs
splay, spread
They made him put his hands on the police car and spread his legs
extend, stretch (out)
She stretched her legs under the table. (figurative) It was good to get out of the car and stretch our legs (= walk about)
lift
The dog lifted its leg against the lamp post
draw up, tuck under
She sat with her legs drawn up underneath her
kick
swing
She swung her legs over the side of the bed and reached for her crutches
entwine, tangle
They gazed at each other, their legs entwined under the table
break, injure
amputate
She had her leg amputated below the knee
shave

LEG + VERB

move
They ran together, their legs moving in unison
flail, kick
He jumped to avoid the flailing leg of the defender
pump
She started running, fat legs pumping
bend
buckle, give way
His legs buckled and he collapsed on the floor
shake, tremble
dangle, hang, swing
He sat with his legs dangling off the bridge
ache

LEG + NOUN

exercise
muscle
injury, pains, trouble, ulcer, wound
room (also legroom)
You don't get much legroom on economy-class flights

PREP

between the/your ~s
The dog sloped off, its tail between its legs
in the ~
He was shot in the leg by a sniper
on the/your ~
I've got a big bruise on my leg
on one ~
Many birds are able to stand on one leg for hours at a time

PHRASES

(have, etc.) your leg in plaster
He was wheeled out of the hospital with his leg in plaster

ADJ

trouser

VERB + LEG

pull up, roll up
He rolled up his trouser legs
roll down

PHRASES

long/short in the leg
These jeans are too long in the leg

ADJ

first, second, etc.
final, last
anchor
The fastest runner often runs the anchor leg (= the last one) of a relay
outbound
homeward

PREP

on the … ~
At last we were on the homeward leg of our journey