trailing

CIDE DICTIONARY

trailing, a. & vb. n. 

 a. & vb. n. from Trail.  [1913 Webster]

Trailing arbutus. (Bot.) See under Arbutus. -- Trailing spring, a spring fixed in the axle box of the trailing wheels of a locomotive engine, and so placed as to assist in deadening any shock which may occur. Weale. -- Trailing wheel, a hind wheel of a locomotive when it is not a driving wheel; also, one of the hind wheels of a carriage.

THESAURUS

trailing

bugging, chase, chasing, cloak-and-dagger work, consecutive, counterespionage, counterintelligence, dogging, electronic surveillance, espial, espionage, follow, follow-up, following, heeling, hounding, hue and cry, hunting, intelligence, intelligence work, military intelligence, observation, prosecution, pursual, pursuance, pursuing, pursuit, quest, searching, secret police, secret service, seeking, sequel, sequence, series, shadowing, spying, stakeout, stalking, succeeding, surveillance, tailing, tracking, tracking down, wiretap, wiretapping