sit on one's tail

all for one and one for all / one for all and all for one

sit on one's hands

sit in one’s saddle

sit on the fence

special interest target (SIT)

sit atop the armor

sit

sit down

sit-down war

sit on the fence / be on the fence (in the Ukraine war)

sit-ups

one-way UAV / one-way attack UAV (OWA UAV)

clipped-delta tail-control surfaces

logistical tail

retarded tail fin

tail

tail fuse

tail rotor blade

tail wind

tail-wheel lock

tail-end Charlie

boat tail

boat-tail base

wheel tail

fox tail

tail-aft aircraft

retractable tail gear

butterfly tail

cruciform tail

horizontal tail

swing tail

tail access ladder