cinch
noun
°A simple saddle girth used in Mexico.
"He found Andy morosely replacing some broken strands in his cinch, and he went straight at the mooted question. — B. M. Bower, The Flying U's Last Stand"
°Something that is very easy to do.
"No problem ... it's a cinch."
verb
°To bring to certain conclusion.
°To tighten down.
synonyms: bagatelle, breeze, cakewalk, doddle more» , piece of cake, walk in the park, walkover