gravel - noun

rock fragments and pebbles

gravel - verb

• cause annoyance in; disturb, especially by minor irritations
• cover with gravel
• be a mystery or bewildering to

gravel - thesaurus

amaze   annoy   baffle   beat   bewilder   bother   chafe   devil   dumbfound   flummox   get   irritate   mystify   nark   nettle   nonplus   perplex   pose   puzzle   rag   rile   stick   stupefy   vex