birdlime UK /ˈbɜːdlaɪm/US /ˈbɝdlaɪm/noun 2verb 1forms 3 noun2 •A sticky substance, of varying compositions, smeared on branches to catch birds. •(slang) Time; a jail term, the serving of a prison sentence. verb1 •To add birdlime to. formsbirdlimed · birdliming · birdlimes