1
general::
Phrase(s): fill someone in (on someone or something)
to tell someone the details about someone or something. • Please fill me in on what happened last night. • Please fill in the committee on the details., Phrase(s): fill in (for someone or something)
Fig. to substitute for someone or something; to take the place of someone or something. • I will have to fill in for Wally until he gets back. • I don’t mind filling in., Phrase(s): fill something in
1. to add material to an indentation, hole, etc., to make it full. • You had better fill the crack in with something before you paint the wall. • You should fill in the cracks first. 2. Fig. to write in the blank spaces on a paper; to write on a form. (See also Fill in the blanks.) • Please fill this form in. • I will fill in the form for you., Phrase(s): fill in
[for an indentation, hole, etc.] to become full. • The scar filled in after a few months. • Will this hole in the ground fill in by itself, or should I put some dirt in?
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Complete something, especially by supplying more information or detail. For example, Be sure to fill in your salary history. It is Also put as fill in the blanks, as in We'll rely on Mary to fill in the blanks. Yet another related usage is fill someone in, as in I couldn't attend, so will you fill me in? The first term dates from the mid-1800s; the others from the first half of the 1900s. Also see FILL OUT. 2. Also, fill in for. Take someone's place, substitute for. For example, The understudy had to fill in at the last minute, or I can't come but my wife will fill in for me. Also see FILL SOMEONE'S SHOES.
American Heritage Idioms