Word Study
doorstop
OXFORD DICTIONARY
doorstop, n. a device for keeping a door open or to prevent it from striking a wall etc. when opened.
THESAURUS
doorstop
arrest, bearing rein, bit, brake, chain, check, checkrein, chock, clog, countercheck, curb, curb bit, damper, drag, drag sail, drift anchor, drift sail, drogue, fetter, holdback, martingale, pelham, remora, scotch, sea anchor, shackle, snaffle, spoke, stay, stop, trammelFor further exploring for "doorstop" in Webster Dictionary Online