protect something from a danger
shield
move one's hand back and forth in greeting
wave
do repeated exercises to learn/ produce a hole
drill
bend something flexible over itself
fold
eject something from the mouth
spit
hit something with a hammer
hammer
catch a foot on something and fall
trip
meet and come into conflict
clash
follow the trail of something or someone
track
pull a vehicle with a rope or chain
tow
cut something, normally wood
saw
superficially cut or clean in a large area
scrape