Nouns

(n)drift, impetus, impulsiona force that moves something along
(n)driftthe gradual departure from an intended course due to external influences (as a ship or plane)
(n)drifta process of linguistic change over a period of time
(n)drifta large mass of material that is heaped up by the wind or by water currents
(n)drift, trend, movementa general tendency to change (as of opinion)“not openly liberal but that is the trend of the book”, “a broad movement of the electorate to the right”
(n)drift, purportthe pervading meaning or tenor“caught the general drift of the conversation”
(n)drift, heading, gallerya horizontal (or nearly horizontal) passageway in a mine“they dug a drift parallel with the vein”

Verbs

(v)float, drift, be adrift, blowbe in motion due to some air or water current“The leaves were blowing in the wind”, “the boat drifted on the lake”, “The sailboat was adrift on the open sea”, “the shipwrecked boat drifted away from the shore”
(v)stray, err, driftwander from a direct course or at random“The child strayed from the path and her parents lost sight of her”, “don't drift from the set course”
(v)roll, wander, swan, stray, tramp, roam, cast, ramble, rove, range, drift, vagabondmove about aimlessly or without any destination, often in search of food or employment“The gypsies roamed the woods”, “roving vagabonds”, “the wandering Jew”, “The cattle roam across the prairie”, “the laborers drift from one town to the next”, “They rolled from town to town”
(v)driftvary or move from a fixed point or course“stock prices are drifting higher”
(v)freewheel, driftlive unhurriedly, irresponsibly, or freely“My son drifted around for years in California before going to law school”
(v)driftmove in an unhurried fashion“The unknown young man drifted among the invited guests”
(v)driftcause to be carried by a current“drift the boats downstream”
(v)driftdrive slowly and far afield for grazing“drift the cattle herds westwards”
(v)driftbe subject to fluctuation“The stock market drifted upward”
(v)driftbe piled up in banks or heaps by the force of wind or a current“snow drifting several feet high”, “sand drifting like snow”