Noun
er.
(heraldry) Abbreviation of ermine.
CH: Have you told many fibs today? M: I lie a lot - it's really useful - but everything I've said today has been the whole truth and nothing but the truth. So help me... er... Trevor... Morrissey
How did you die?" "We er.... drowned in a bathtub." "All three of you?" "It was a big bathtub. Rick Riordan