The wisest and the most experienced cannot be easily deceived.

(idiomatic) To sacrifice something of little value in the hope of gaining something better.

(transitive) To discover or capture someone in the act of committing a crime.

(idiomatic) To contract a serious illness, especially a nasty cold or other respiratory ailment and especially as a result of exposure to wet or chilly weather.

A rectangular piece of metal with one or more holes into which a pin or tenon (of a lock or other mechanism) fits / A plastic plate with a protruding lip used by young children who drop food when eating

plural of catch plate

present participle of catch a cold

Make sure you have a thing before you decide what to do with it.

Misspelling of Grubbs' catalyst.

(organic chemistry) Any of a range of transition metal carbene complexes used to catalyse olefin metathesis