tugboat, tug, towboat, tower -- (a powerful small boat designed to pull or push larger ships)
Overview of verb tug
The verb tug has 7 senses
tug -- (pull hard; "The prisoner tugged at the chains"; "This movie tugs at the heart strings")
tug, labor, labour, push, drive -- (strive and make an effort to reach a goal; "She tugged for years to make a decent living"; "We have to push a little to make the deadline!"; "She is driving away at her doctoral thesis")
tug -- (tow (a vessel) with a tug; "The tugboat tugged the freighter into the harbor")
lug, tote, tug -- (carry with difficulty; "You'll have to lug this suitcase")
tug -- (move by pulling hard; "The horse finally tugged the cart out of the mud")
tug -- (pull or strain hard at; "Each oar was tugged by several men")
tug -- (struggle in opposition; "She tugged and wrestled with her conflicts")
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