blíícímu
Blíícímu is not a standard Czech dictionary form; it is most likely a misspelling of blížícímu, which is the dative singular masculine animate form of the present active participle blížící se, derived from the verb blížit se (to approach).
Blížící se is a present active participle that describes something or someone that is approaching. It behaves
Morphology and usage notes: the participle blížící se declines like an adjective and can modify masculine, feminine,
Example: K blížícímu se muži se obrátili hosté s úsměvem. (The guests turned to the approaching man
See also: blížící se, present participles in Czech, Czech grammar, adjective-like participles.