WordNet sense 1 (an indication of potential opportunity):

hint, lead, tip, wind, wind, lead, lead, confidential information

WordNet sense 2 (be a guiding force, as with directions or advice):

guide

WordNet sense 3 (castrated bull):

bullock

WordNet sense 4 (direct the course; determine the direction of travelling):

channelize, direct, head, maneuver, point, channelise, manoeuver, manoeuvre