"tugs" in the noun sense
1. tug, jerk
a sudden abrupt pull
2. tugboat, tug, towboat, tower
a powerful small boat designed to pull or push larger ships
"tugs" in the verb sense
"The prisoner tugged at the chains"
"This movie tugs at the heart strings"
2. 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"
tow (a vessel) with a tug
"The tugboat tugged the freighter into the harbor"
4. lug, tote, tug
carry with difficulty
"You'll have to lug this suitcase"
move by pulling hard
"The horse finally tugged the cart out of the mud"
pull or strain hard at
"Each oar was tugged by several men"
struggle in opposition
"She tugged and wrestled with her conflicts"
Source: WordNet® (An amazing lexical database of English)
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