hitch
noun
1
: limp
had a hitch in his step
2
: a sudden movement or pull : jerk
gave his trousers a hitch
3
a
: a sudden halt : stoppage
a hitch in the performance
b
: a usually unforeseen difficulty or obstacle
The plan went off without a hitch.
4
: the act or fact of catching hold
5
: a connection between a vehicle or implement and a detachable source of power (such as a tractor or horse)
attached a trailer hitch to his pickup
6
: a delimited period especially of military service
serving a four-year hitch in the navy
7
: any of various knots used to form a temporary noose in a line or to secure a line temporarily to an object
8
: lift entry 2 sense 5b
catching a hitch into town
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Merriam-Webster unabridged



