Undefined slot classes in definition?

slot · ​ a long, narrow opening, into which you put or fit something to put some coins in the slot see also mail slot · ​ a position, a time or an opportunity

A Comparative Study of Particles and Prefixes Bettelou Los, Corrien slot , an open slot for the verb , and a specific meaning These templates

study slot Study Skills and Note-taking · Sentence Grammar In those cases, some other meaning is probably the true subject and should be placed in the subject slot

reelnrg online slot sites Slot Definition In the context of transportation, a slot refers to the allocated space or time reserved for the arrival or departure of a vessel at a