WordNet sense 1 (the phenomenon of resistance to motion through a fluid):

retarding force

WordNet sense 2 (force into some kind of situation, condition, or course of action):

embroil, sweep, tangle, drag in, sweep up

WordNet sense 3 (to lag or linger behind):

trail, drop behind, get behind, hang back

WordNet sense 4 (walk without lifting the feet):

scuff

WordNet sense 5 (draw slowly or heavily):

cart, hale, haul

WordNet sense 6 (search (as the bottom of a body of water) for something valuable or lost):

dredge

WordNet sense 7 (suck in or take (air)):

draw, puff

WordNet sense 8 (a slow inhalation (as of tobacco smoke)):

pull

WordNet sense 9 (proceed for an extended period of time):

drag on, drag out