In the iDnes dictionary I found that ... "catch on = kopírovat", "catch one's breath = lapat po vzduchu", "catch one's eye = bít do očí", "catch up with = předstihnout", catch-as-catch-can = rvačka,

... and many, many many many more assinine translations.  I hope Kal uses some of those today, so we can laugh at him.  What kind of a teacher is he anyway, not letting his students know how awful that dictionary is, and that it belongs in the garbage?  I hope Kal tells iDnes management to stick it up their butt!